COVID-19 responses in vulnerable populations: from clinical management to healthcare policies

© Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
 
EDITORIAL
COVID-19 responses in vulnerable populations: from clinical management to healthcare policies
Harry HX Wang, PhD1,2,3; Vivian Yawei Guo, PhD2; Yao-jie Xie, PhD4,5,6; Yu-ting Li, MPH7; Junjie Huang, PhD1,8; Martin CS Wong, MD, MPH8,9,10,11,12
1 Editor, Hong Kong Medical Journal
2 School of Public Health, Sun Yat-Sen University, Guangzhou, China
3 Baoan Central Hospital of Shenzhen, Shenzhen, China
4 School of Nursing, The Hong Kong Polytechnic University, Hong Kong SAR, China
5 Joint Research Centre for Primary Health Care, The Hong Kong Polytechnic University, Hong Kong SAR, China
6 Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hong Kong SAR, China
7 State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
8 Centre for Health Education and Health Promotion, The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
9 Editor-in-Chief, Hong Kong Medical Journal
10 School of Public Health, Fudan University, Shanghai, China
11 The Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
12 School of Public Health, Peking University, Beijing, China
 
Corresponding author: Prof Martin CS Wong (wong_martin@cuhk.edu.hk)
 
 Full paper in PDF
 
Healthcare for vulnerable populations, including but not limited to children, women (particularly during pregnancy), older adults, individuals with underlying long-term conditions, and those facing structural barriers associated with lower socio-economic status, remains one of the most formidable challenges in health protection and promotion worldwide. The advent of coronavirus disease 2019 (COVID-19) has exacerbated the vulnerability of these groups, placing them at greater risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and worse health outcomes.1 Global data indicate that COVID-19 has disproportionately affected these vulnerable groups, driven by a complex interplay of biological factors, social determinants, and overstretched healthcare services.2
 
A substantial body of evidence demonstrates the harmful and long-lasting consequences of COVID-19 on the development of children and adolescents, encompassing physical health, mental well-being, academic performance, and socio-emotional skills, both directly and indirectly.3 A recent review of the literature revealed that adolescents, children from ethnic minority backgrounds or lower-income families, and those with obesity were more susceptible to SARS-CoV-2 infection.4 While COVID-19 generally presents as a milder or moderate illness in children compared to adults, due to fundamental differences in immune responses, continued surveillance—such as wastewater monitoring and universal or pooled testing—remains critical to managing the spread of infection within communities.4 Serious conditions, although fortunately rare, require preparedness and response efforts from frontline paediatricians and intensivists to provide optimal respiratory support. A framework for airway management procedures has been proposed, based on a comprehensive system incorporating respiratory pattern monitoring, spontaneous respiration oxygenation, apnoeic oxygenation, manual ventilation, and scavenging to reduce the risk of healthcare-associated transmission.5 Case reports have described adolescent patients presenting with rare conditions, such as laboratory-confirmed SARS-CoV-2 infection with chilblain-like lesions6 and paediatric multisystem inflammatory syndrome temporally associated with SARS-CoV-2 after recovery from COVID-19.7 Both cases suggest that paediatricians should remain vigilant for potential symptoms and signs to enable timely diagnosis and mitigate transmission risks.
 
Although vaccination has proven effective in reducing the severity of COVID-19 and providing protection against post—COVID-19 conditions, increasing concerns persist regarding the knowledge gap on long-term efficacy and potential adverse events associated with COVID-19 vaccines.4 8 Gut microbiota may play an important role in the immune response to vaccination, offering a promising avenue for management of vaccine-related adverse effects. A pilot study in Hong Kong demonstrated the safety and tolerability of a microbiota-derived health supplement among children aged 5 to 17 years.8 This supplement, administered prior to COVID-19 vaccination and continued for 7 days post-vaccination, showed potential for alleviating vaccine hesitancy among parents and children.8
 
The impacts of COVID-19 on the dramatically increased use of digital tools in school education have also attracted considerable public attention, partly due to mitigation strategies such as school closures and restrictions, which have affected at least half of the global student population.9 Despite rapid advances in virtual learning technology and home-schooling platforms, the prolonged reliance on remote or distance learning in response to the COVID-19 pandemic poses profound risks to the cognitive and social development of adolescents. These risks arise from the absence of physical interactions with peers and teachers during the transition to adulthood.9 Such effects may be more pronounced in children and youth with behavioural or intellectual disabilities who rely on special education support services. In resource-constrained settings or among low-income families, effective education time is often substantially reduced due to inadequate access to electronic devices and limited internet connectivity, thereby exacerbating academic inequality. Addressing this challenge may require sustained government investment in community-based, targeted socio-technical interventions to close the social class achievement gaps and reduce the digital divide.10
 
Excessive screen time resulting from increased reliance on digital media has led to a range of public health concerns, including asthenopia and vision impairment. A clinical assessment of visual acuity among school-aged adolescents in western rural China revealed a significantly higher prevalence of asthenopia and worsened vision impairment during the COVID-19 pandemic compared with the pre-pandemic period.11 The striking progression of vision impairment highlights the urgent need for policymakers to develop system-level strategies and tailored guidelines aimed at promoting healthy screen time practices. Such measures are essential to address the increasing incidence of eye problems among students in the post—COVID-19 era, where digital media is deeply embedded in nearly every aspect of adolescents’ daily lives.
 
Coronavirus disease 2019 also posed multiple challenges throughout pregnancy because pregnant women infected with the virus faced a higher risk of severe illness relative to their non-pregnant counterparts.12 Additionally, they may experience exacerbation of COVID-19 symptoms due to reduced lung capacity associated with fetal growth and immune suppression during pregnancy.13 Although compelling evidence indicates that rigorous public health measures effectively mitigate the spread of SARS-CoV-2,14 pregnant women often exhibited high levels of anxiety about contracting COVID-19, largely due to their vulnerable immune status.15 This widespread anxiety may arise from perceived risks of pregnancy complications, fears of vertical transmission to the newborn, and uncertainties regarding delivery and breastfeeding practices in the event of infection.15 These observations highlight the importance of ensuring enhanced laboratory support for universal screening and providing adequate personal protective equipment. Emotional support is equally important. Satisfaction with maternity care can be achieved through partner companionship during labour.15 A multidisciplinary approach involving expert teams has proven essential in providing optimal care.12 However, changes to childbirth companionship and peripartum services during the COVID-19 pandemic frequently fell short of pregnant women’s expectations, potentially leading to negative psychological consequences such as heightened antenatal anxiety and emotional disturbance.16 Guidelines and decision-making in obstetric practice must balance infection control measures with the peripartum needs of women; the nulliparous group requires additional attention.
 
Older patients with COVID-19 are considered among the most vulnerable groups during the pandemic because advanced age and co-morbidities are well-documented risk factors for mortality.17 Clinical findings have supported frailty screening as a reliable predictor of clinical deterioration and adverse outcomes in older patients upon hospital admission.17 Furthermore, older adults were more likely to remain at home during the pandemic, with limited access to recreational activities or social support, while facing an increased risk of elder abuse.18 Tackling these issues may require government-led legislation and integrated social welfare services to reduce vulnerability to abuse and neglect among older adults, particularly those residing in long-term care facilities.19
 
A recent global review examined national plans and policies on maternal, newborn, child, and adolescent health services, as well as health services for older people across 110 countries.20 The findings revealed a significant knowledge gap, particularly regarding the absence of specific activities, monitoring indicators, or resource allocations aimed at mitigating potential service disruptions in the COVID-19 response and recovery plans. The insights gained from clinical management during this pandemic will undoubtedly inform the development of policy interventions and guide future interdisciplinary research to enhance preparedness for emerging and unforeseen public health challenges, ultimately improving health outcomes for vulnerable populations.
 
Author contributions
All authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
 
Conflicts of interest
All authors have declared no conflict of interest.
 
Funding/support
This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
 
References
1. World Health Organization. Considerations for COVID-19 surveillance for vulnerable populations. Manila: World Health Organization; 2021.
2. World Health Organization. COVID-19 and the social determinants of health and health equity: evidence brief. Geneva: World Health Organization; 2021.
3. Irwin M, Lazarevic B, Soled D, Adesman A. The COVID-19 pandemic and its potential enduring impact on children. Curr Opin Pediatr 2022;34:107-15. Crossref
4. Wurm J, Ritz N, Zimmermann P. COVID-19 in children: evolving epidemiology, immunology, symptoms, diagnostics, treatment, post covid conditions, prevention strategies, and future directions. J Allergy Clin Immunol 2024 Nov 15. Epub ahead of print. Crossref
5. Leung KK, Ku SW, Fung RC, et al. Airway management in children with COVID-19. Hong Kong Med J 2022;28:315-20. Crossref
6. Wong JS, Wong TS, Chua GT, et al. COVID toe in an adolescent boy: a case report. Hong Kong Med J 2022;28:175-7. Crossref
7. Chua GT, Wong JS, Chung J, et al. Paediatric multisystem inflammatory syndrome temporally associated with SARS-CoV-2: a case report. Hong Kong Med J 2022;28:76-8. Crossref
8. Chow CM, Cheong PK, Hu J, Ching JY. Can a microbiota-derived health supplement mitigate adverse events after COVID-19 vaccination in children? Hong Kong Med J 2023;29:542-4. Crossref
9. Leung KK, Hon KL, Ip P, Ng DK. COVID-19 and children: potential impacts and alleviation strategies. Hong Kong Med J 2023;29:443-7. Crossref
10. Golden AR, Srisarajivakul EN, Hasselle AJ, Pfund RA, Knox J. What was a gap is now a chasm: remote schooling, the digital divide, and educational inequities resulting from the COVID-19 pandemic. Curr Opin Psychol 2023;52:101632.Crossref
11. Ding Y, Guan H, Du K, Zhang Y, Wang Z, Shi Y. Asthenopia prevalence and vision impairment severity among students attending online classes in low-income areas of western China during the COVID-19 pandemic. Hong Kong Med J 2023;29:150-7. Crossref
12. Nana M, Hodson K, Lucas N, Camporota L, Knight M, Nelson-Piercy C. Diagnosis and management of COVID-19 in pregnancy. BMJ 2022;377:e069739. Crossref
13. Ahmed AK, Sijercic VC, Sayad R, et al. Risks and preventions for pregnant women and their preterm infants in a world with COVID-19: a narrative review. Vaccines (Basel) 2023;11:640. Crossref
14. Leung HH, Kwok CY, Sahota DS, et al. Effects of strict public health measures on seroprevalence of anti- SARS-CoV-2 antibodies during pregnancy. Hong Kong Med J 2022;28:294-9. Crossref
15. Lok WY, Chow CY, Kong CW, To WW. Knowledge, attitudes, and behaviours of pregnant women towards COVID-19: a cross-sectional survey. Hong Kong Med J 2022;28:124-32. Crossref
16. Hui PW, Seto MT, Cheung KW. Behavioural adaptations and responses to obstetric care among pregnant women during an early stage of the COVID-19 pandemic in Hong Kong: a cross-sectional survey. Hong Kong Med J 2022;28:367-75. Crossref
17. Tam EM, Kwan YK, Ng YY, Yam PW. Clinical course and mortality in older patients with COVID-19: a clusterbased study in Hong Kong. Hong Kong Med J 2022;28:215-22. Crossref
18. Shea YF, Ip WC, Luk JK. Comparison of the pattern of elderly abuse in Hong Kong before and after the COVID-19 pandemic. Hong Kong Med J 2022;28:502-3. Crossref
19. Gardner W, States D, Bagley N. The coronavirus and the risks to the elderly in long-term care. J Aging Soc Policy 2020;32:310-5. Crossref
20. Czerniewska A, Sharkey A, Portela A, Drapkin S, Mustafa S. National COVID-19 preparedness and response plans: a global review from the perspective of services for maternal, newborn, child and adolescent health and older people. BMJ Glob Health 2024;9:e013711. Crossref

Enhancing human papillomavirus vaccine acceptance in Hong Kong: a call for action and public education

© Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
 
EDITORIAL
Enhancing human papillomavirus vaccine acceptance in Hong Kong: a call for action and public education
Zigui Chen, BS, PhD1; Jason YK Chan, FRCSEd (ORL), FHKAM (Otorhinolaryngology)2; Paul KS Chan, FHKCPath, FHKAM (Pathology)1
1 Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
2 Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
 
Corresponding author: Dr Zigui Chen (zigui.chen@cuhk.edu.hk)
 
 Full paper in PDF
 
Growing global awareness of human papillomavirus (HPV) and its associated health risks, particularly cervical cancer, has led to widespread implementation of HPV vaccination programmes. In Hong Kong, HPV remains a substantial but underestimated public health burden, as Chu et al1 highlighted in their recent study published in the Hong Kong Medical Journal. The study investigated parental acceptance of HPV vaccination for boys and girls in Primary 4 to 6, offering critical insights into the factors influencing vaccination uptake.
 
Human papillomavirus vaccine awareness and uptake
The study by Chu et al1 evaluated parental awareness, knowledge, and attitudes towards HPV vaccination in Hong Kong, a city that—like many others—has integrated HPV vaccination into its Childhood Immunisation Programme (HKCIP). As these vaccination programmes expand globally, an understanding of factors that influence parental decision-making is needed to improve uptake and reduce the burden of HPV-associated diseases. Chu et al1 found high awareness of HPV among most parents (81.4% among boys’ parents and 78.5% among girls’ parents). Despite this awareness, knowledge about HPV and the vaccine remains limited. Moreover, the actual vaccine uptake rates are alarmingly low: 6.8% for boys and 4.9% for girls.1 The study identified several key factors influencing vaccine acceptance, including parental HPV vaccination status, household income, and concerns about HPV infection.1 Focused efforts regarding safety education and implement catch-up vaccination are needed to overcome vaccine hesitancy in Hong Kong.
 
These results are consistent with global tendencies towards vaccine hesitancy and low uptake, despite the documented effectiveness of HPV vaccines in preventing HPV-related diseases. For example, a study by Wang et al2 in China similarly showed that parental knowledge of HPV was limited, and acceptance was hindered by misconceptions about the vaccine’s safety and necessity, particularly for boys. In the United States, although HPV vaccination coverage has increased since introduction of the vaccine, disparities remain. A 2021 study revealed that only 58.6% of adolescents were fully vaccinated; the acceptance rate was lower among boys than among girls.3 In Europe, similar trends have been observed. Countries such as Italy have reported relatively low HPV vaccination rates due to scepticism about vaccine safety and insufficient public health campaigns.4
 
These regional disparities in vaccine uptake suggest that although awareness campaigns may increase recognition of HPV, they often do not result in higher vaccination rates unless they address underlying concerns about vaccine safety, efficacy, and the perceived importance of vaccinating boys. The study by Chu et al1 showed results consistent with this challenge in Hong Kong, where boys’ parents were significantly less likely to accept the vaccine than girls’ parents, despite the government’s efforts to provide the vaccine free of charge to girls under the HKCIP.
 
Barriers to human papillomavirus vaccine acceptance
A key finding in the study by Chu et al1 is the misconception about the cost of the vaccine. Although the HPV vaccine is provided free of charge to girls under the HKCIP, many parents still considered it too expensive. This finding indicates a disconnect between the availability of free vaccines and public understanding of the Programme, likely exacerbated by the coronavirus disease 2019 pandemic, which disrupted routine healthcare services and public health campaigns worldwide.5
 
The reluctance of boys’ parents to accept the HPV vaccine also reflects global trends. Many parents continue to primarily associate HPV with cervical cancer, which is regarded as a disease that only affects girls and women. This association has persisted despite increasing evidence that links HPV to other cancers, such as penile, anal, and oropharyngeal cancers, which affect boys and men.6 7 This perception gap is not unique to Hong Kong; studies from the Australia, Georgia, and the United States have also identified gender bias as a major barrier to HPV vaccine acceptance for boys.8 9 10
 
Moreover, the study by Chu et al1 demonstrated that boys’ parents were more likely than girls’ parents to discuss sexually transmitted diseases with their children (33% vs 15.2%). Despite these discussions, vaccine acceptance remained lower for boys. This paradox suggests that although parents may be aware of the risks of HPV transmission, they may not fully understand the broader health implications of the virus for both genders or the protective benefits of vaccination.
 
The importance of public education and policy interventions
The study by Chu et al1 underscores the urgent need for more effective public education campaigns in Hong Kong. Public health authorities should focus on dispelling misconceptions about the cost and safety of the HPV vaccine, along with their efforts to emphasise its importance for both boys and girls. The fact that many parents remain unaware of the free vaccination programme for girls indicates a lack of effective communication between the government and the public. This communication issue is not unique to Hong Kong; similar challenges have been reported in Europe, where vaccine uptake has been hindered by misinformation and inadequate public health messaging.11
 
Additionally, targeted interventions should be implemented to address the gender disparity in vaccine acceptance. Public health campaigns must highlight the risks of HPV-related cancers for boys and the benefits of achieving high vaccination coverage in both genders. Studies have shown that gender-neutral vaccination programmes, such as those implemented in Australia12 and some parts of Europe,12 13 have led to significant reductions in HPV infections and associated diseases. These programmes also provide indirect protection for unvaccinated individuals through herd immunity, reinforcing the importance of including boys in national vaccination strategies.14 15
 
Recommendations for future research and policy
To improve HPV vaccination rates in Hong Kong and worldwide, policymakers and healthcare providers should consider the following recommendations:
  1. Expand public health campaigns: Government-led campaigns should focus on increasing awareness regarding the availability of free vaccines for girls and the benefits of vaccinating boys. These campaigns must address common misconceptions about HPV and concerns about the vaccine’s cost, safety, and efficacy.
  2. Enhance school-based vaccination programmes: Schools serve as a critical platform for vaccine delivery and education. The integration of HPV education into the school curriculum, along with routine vaccination programmes, could help increase acceptance among both parents and students.
  3. Implement gender-neutral vaccination policies: Given the evidence supporting gender-neutral vaccination programmes, policymakers should consider expanding free HPV vaccination to boys under the HKCIP. This would protect boys from HPV-related diseases while contributing to the overall reduction of HPV transmission within the community.
  4. Address vaccine hesitancy through healthcare providers: Physicians and other healthcare professionals play a pivotal role in promoting vaccination. Efforts to train healthcare providers to effectively communicate the benefits of the HPV vaccine and address parental concerns are essential for greater vaccine uptake.
 
Conclusion
The study by Chu et al1 provides valuable insights into the factors influencing HPV vaccine acceptance among parents in Hong Kong. The low uptake rates, despite high awareness, highlight the need for more robust public health campaigns and gender-neutral vaccination policies. By addressing misconceptions about the vaccine and expanding access to boys, Hong Kong can improve its vaccination coverage and protect future generations from HPV-related diseases. Similar efforts in other regions have shown that, with the right interventions, substantial progress can be made in increasing HPV vaccine acceptance and uptake.
 
Author contributions
All authors have contributed equally to the concept, development and critical revision of the manuscript. All authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
 
References
1. Chu JK, Sing CW, Li Y, Wong PH, So EY, Wong IC. Factors affecting human papillomavirus vaccine acceptance among parents of Primary 4 to 6 boys and girls in Hong Kong. Hong Kong Med J 2024;30:386-99. Crossref
2. Wang Z, Wang J, Fang Y, et al. Parental acceptability of HPV vaccination for boys and girls aged 9-13 years in China—a population-based study. Vaccine 2018;36:2657-65. Crossref
3. Pingali C, Yankey D, Elam-Evans LD, et al. National, regional, state, and selected local area vaccination coverage among adolescents aged 13-17 years—United States, 2020. MMWR Morb Mortal Wkly Rep 2021;70:1183-90. Crossref
4. Montalti M, Salussolia A, Capodici A, et al. Human papillomavirus (HPV) vaccine coverage and confidence in Italy: a nationwide cross-sectional study, the OBVIOUS project. Vaccines (Basel) 2024;12:187. Crossref
5. Shet A, Carr K, Danovaro-Holliday MC, et al. Impact of the SARS-CoV-2 pandemic on routine immunisation services: evidence of disruption and recovery from 170 countries and territories. Lancet Glob Health 2022;10:e186-94. Crossref
6. Machalek DA, Poynten M, Jin F, et al. Anal human papillomavirus infection and associated neoplastic lesions in men who have sex with men: a systematic review and meta-analysis. Lancet Oncol 2012;13:487-500. Crossref
7. Gillison ML, Chaturvedi AK, Anderson WF, Fakhry C. Epidemiology of human papillomavirus–positive head and neck squamous cell carcinoma. J Clin Oncol 2015;33:3235-42. Crossref
8. Gilkey MB, Calo WA, Moss JL, Shah PD, Marciniak MW, Brewer NT. Provider communication and HPV vaccination: the impact of recommendation quality. Vaccine 2016;34:1187-92. Crossref
9. Petagna CN, Perez S, Hsu E, et al. Facilitators and barriers of HPV vaccination: a qualitative study in rural Georgia. BMC Cancer 2024;24:592. Crossref
10. Netfa F, King C, Davies C, et al. Perceived facilitators and barriers to the uptake of the human papillomavirus (HPV) vaccine among adolescents of Arabic-speaking mothers in NSW, Australia: a qualitative study. Vaccine X 2023;14:100335. Crossref
11. Karafillakis E, Simas C, Jarrett C, et al. HPV vaccination in a context of public mistrust and uncertainty: a systematic literature review of determinants of HPV vaccine hesitancy in Europe. Hum Vaccin Immunother 2019;15:1615-27. Crossref
12. Drolet M, Bénard É, Pérez N, Brisson M; HPV Vaccination Impact Study Group. Population-level impact and herd effects following the introduction of human papillomavirus vaccination programmes: updated systematic review and meta-analysis. Lancet 2019;394:497-509.Crossref
13. Diakite I, Nguyen S, Sabale U, et al. Public health impact and cost-effectiveness of switching from bivalent to nonavalent vaccine for human papillomavirus in Norway: incorporating the full health impact of all HPV-related diseases. J Med Econ 2023;26:1085-98. Crossref
14. Brisson M, Bénard É, Drolet M, et al. Population-level impact, herd immunity, and elimination after human papillomavirus vaccination: a systematic review and meta-analysis of predictions from transmission-dynamic models. Lancet Public Health 2016;1:e8-17. Crossref
15. Brisson M, Kim JJ, Canfell K, et al. Impact of HPV vaccination and cervical screening on cervical cancer elimination: a comparative modelling analysis in 78 low-income and lower-middle-income countries. Lancet 2020;395:575-90. Crossref

Can we eliminate mother-to-child transmission of hepatitis B virus in Hong Kong by 2030?

© Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
 
EDITORIAL
Can we eliminate mother-to-child transmission of hepatitis B virus in Hong Kong by 2030?
WC Leung, MD, FHKAM (Obstetrics & Gynaecology)1; Martin CS Wong, MD, FHKAM (Family Medicine)2,3
1 Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Hong Kong SAR, China
2 The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
3 Editor-in-Chief, Hong Kong Medical Journal
 
Corresponding author: Dr WC Leung (leungwc@ha.org.hk)
 
 Full paper in PDF
 
Hepatitis B virus (HBV) infection is an important public health issue. Hong Kong’s universal HBV immunisation programme for newborns began in 1988.1 This programme consists of administering hepatitis B immunoglobulin (HBIg) to infants born to hepatitis B surface antigen (HBsAg)–positive mothers, along with the first dose of the HBV vaccine at birth. The second and third doses of the vaccine are typically given in Maternal and Child Health Centres at 1 and 6 months, respectively. Notably, the proportion of HBsAg-positive pregnant women has steadily decreased in recent years, from 5.2% in 20162 to 2.4% in 2023 (unpublished data). Despite a 99.8% HBsAg screening rate among antenatal women, together with 99.5% coverage for both HBIg and HBV vaccinations in newborns of HBsAg-positive mothers,2 a local study3 of 641 HBsAg-positive pregnant women showed that the overall mother-to-child transmission (MTCT) rate remained 1.1%, indicating immunoprophylaxis failure. To align with the World Health Organization’s (WHO) goal of eliminating viral hepatitis as a public health threat by 2030,4 and specifically to achieve the WHO target of <0.1% HBsAg prevalence among 5-year-old children by that year, further reduction of MTCT of HBV has been targeted by the multidisciplinary Steering Committee on Prevention and Control of Viral Hepatitis, established in 2018 and chaired by the Director of Health and the Chief Executive of Hospital Authority.5 As an obstetrics representative on the Steering Committee, the first author had the opportunity to present a literature review for use in formulating the action plan. Three strategies were considered: (1) maintaining the current approach of administering HBIg and HBV vaccinations to newborns of HBsAg-positive mothers, (2) conducting another randomised controlled trial on the use of tenofovir in further prevention of MTCT of HBV, and (3) implementing a universal programme to use tenofovir for this purpose. Although two major randomised controlled trials,6 7 both published in The New England Journal of Medicine, appeared to reach conflicting conclusions, the MTCT of HBV rates were zero in both the Mainland China study6 (n=92, per-protocol) and the Thailand study7 (n=147). The safety of tenofovir in pregnancy has also been established. Rebound increases in alanine aminotransferase after tenofovir discontinuation were mild in most cases (acute hepatic exacerbation, defined as alanine aminotransferase elevation of >300 IU/L, occurred in 6% of the tenofovir group vs 3% of the control group7). The administration of antivirals to HBsAg-positive pregnant women with high HBV DNA levels has been recommended by the American Association for the Study of Liver Diseases, European Association for the Study of the Liver, Asian Pacific Association for the Study of the Liver, and Advisory Committee on Immunization Practices.5 Despite these recommendations, the WHO had not made any recommendations by 2018. The Steering Committee ultimately decided to proceed with option 3.5
 
All HBsAg-positive pregnant women with an HBV viral load >200 000 IU/mL will receive an early referral to the corresponding hepatology clinic under Hospital Authority to discuss starting tenofovir (tenofovir disoproxil fumarate; United States Food and Drug Administration pregnancy category B8) by 28 weeks of gestation to further reduce the risk of MTCT of HBV. This programme began as a pilot at Queen Mary Hospital and Prince of Wales Hospital in the first quarter of 2020; it was expanded to Pamela Youde Nethersole Eastern Hospital, Kwong Wah Hospital, Queen Elizabeth Hospital, Princess Margaret Hospital, United Christian Hospital, and Tuen Mun Hospital in the third quarter of 2020.5 In this issue of the Hong Kong Medical Journal, Cheung et al9 published the 2024 Hong Kong College of Obstetricians and Gynaecologists guideline on antenatal screening and management of hepatitis B to prevent MTCT, summarising current clinical practices in Hong Kong. This evidence-based guideline aligns with the core strategy of reducing MTCT risk in the Hong Kong Viral Hepatitis Action Plan 2020-2024.10 Additionally, the guideline addresses important issues such as immunoprophylaxis failure, antenatal management, and the indications for and duration of continued antiviral treatment after delivery. We strongly encourage our readers to incorporate the recommendations of the Hong Kong College of Obstetricians and Gynaecologists into their clinical practice.
 
Between September 2020 and December 2022, a total of 2151 HBsAg-positive pregnant women attended Hospital Authority antenatal clinics.11 Among them, 328 (15.2%) had a high viral load (HBV DNA >200 000 IU/mL) and were referred to hepatologists, and 314 (95.7%) of these pregnant women attended hepatology clinics. After consultation with hepatologists, most women (n=292, 93.0%) accepted tenofovir prophylaxis.11 Among those who refused tenofovir after consultation, common reasons included concerns about potential side-effects on the fetus and fears of hepatitis flare-ups after postpartum discontinuation of tenofovir.11
 
A key aspect of outcome assessment is post-vaccination serology testing, which will be performed in infants after they complete the full course of vaccination. Infants born to HBsAg-positive mothers will be recruited from Maternal and Child Health Centres and referred to the Hong Kong Children’s Hospital for blood tests. We anticipate favourable results, confirming the elimination of MTCT of HBV in Hong Kong by 2030!
 
Author contributions
Both authors contributed equally to the development of the manuscript. Both authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
 
Conflicts of interest
Both authors have declared no conflicts of interest.
 
Funding/support
This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
 
References
1. Wong VC, Ip HM, Reesink HW, et al. Prevention of the HBsAg carrier state in newborn infants of mothers who are chronic carriers of HBsAg and HBeAg by administration of hepatitis-B vaccine and hepatitis-B immunoglobulin. Double-blind randomised placebo-controlled study. Lancet 1984;1:921-6. Crossref
2. Department of Health, Hong Kong SAR Government. Surveillance of Viral Hepatitis in Hong Kong: 2022 Report. 2023. Available from: https://www.hepatitis.gov.hk/english/health_professionals/files/hepsurv22.pdf. Accessed 8 Oct 2024.
3. Cheung KW, Seto MT, Kan AS, et al. Immunoprophylaxis failure of infants born to hepatitis B carrier mothers following routine vaccination. Clin Gastroenterol Hepatol 2018;16:144-5. Crossref
4. World Health Organization. Global Hepatitis Report 2017. Geneva: Global Hepatitis Programme; 2017. Available from: http://apps.who.int/iris/bitstream/10665/255016/1/9789241565455-eng.pdf?ua=1. Accessed 27 Sep 2024.
5. Leung WC. Use of tenofovir in further prevention of mother-to-child-transmission of hepatitis B virus. Hong Kong Med Diary 2020;25:11-5.
6. Pan CQ, Duan Z, Dai E, et al. Tenofovir to prevent hepatitis B transmission in mothers with high viral load. N Engl J Med 2016;374:2324-34. Crossref
7. Jourdain G, Ngo-Giang-Huong N, Harrison L, et al. Tenofovir versus placebo to prevent perinatal transmission of hepatitis B. N Engl J Med 2018;378:911-23. Crossref
8. United States Food and Drug Administration. Prescribing information: tenofovir disoproxil fumarate tablets, for oral use. Revised 2017. Available from: https://www.accessdata.fda.gov/drugsatfda_docs/pepfar/078800PI.pdf. Accessed 9 Oct 2024.
9. Cheung KW, So PL, Mak LL, et al. 2024 Hong Kong College of Obstetricians and Gynaecologists guideline on antenatal screening and management of hepatitis B for prevention of mother-to-child transmission. Hong Kong Med J 2024;30:400-8. Crossref
10. Department of Health, Hong Kong SAR Government. Hong Kong Viral Hepatitis Action Plan 2020-2024. 2020. Available from: https://www.hepatitis.gov.hk/doc/action_plan/Action%20Plan_Full%20Version_PDF_en.pdf. Accessed 8 Oct 2024.
11. Tsui WM, Leung WC, Kung KN, Lai CH. Antiviral prophylaxis for the prevention of mother-to-child transmission of hepatitis B virus. Hospital Authority Convention 2024 poster presentation F3_3.34. Available from: https://d1j0dbg7fhovrj.cloudfront.net/assets/haconvention2024/filemanager/images/1712735576F_P3.34_TSUIWaiManVivien.jpg. Accessed 27 Sep 2024.

The use of paracetamol in clinical consultations: are current prescribing practices safe?

© Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
 
EDITORIAL
The use of paracetamol in clinical consultations: are current prescribing practices safe?
Bosco HM Ma, MD, FHKAM (Medicine)1; Martin CS Wong, MD, FHKAM (Family Medicine)2,3
1 Division of Geriatric Medicine, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
2 The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
 
Corresponding author: Dr Bosco HM Ma (hmma@cuhk.edu.hk)
 
 Full paper in PDF
 
Chronic pain is a very common ailment. An early local survey of 1051 adults revealed that 113 (10.8%) had chronic pain lasting >3 months within the previous year.1 Of these individuals, 30.1% had attempted self-treatment with analgesics.1 Female gender (odds ratio [OR]=1.5) and advanced age (≥60 years) [OR=2.2] were independent risk factors for chronic pain.1 Another local study assessed the prevalence of pain in older people attending a geriatric outpatient specialist clinic at a regional hospital.2 Among 749 participants, 461 (61.5%) had experienced pain in the previous 2 weeks.2 Over half (51.3%) of the individuals with pain had taken analgesics.2
 
Paracetamol is an effective and easily accessible first-choice analgesic. It is available alone as a non-prescription medication or in combination with other medications.3 This drug is considered safe when the daily dose does not exceed 4 g in adults. It is usually preferred over non-steroidal anti-inflammatory drugs, which are associated with renal, gastrointestinal, and cardiovascular side-effects, especially in older people with multiple co-morbidities.4 Paracetamol is one of the most commonly prescribed analgesics worldwide.5
 
Paracetamol reduces the production of pro-inflammatory prostaglandins and thromboxanes by inhibiting the enzyme cyclooxygenase,6 which is considered a key mechanism for inducing analgesia. It is extensively metabolised by hepatic glucuronidation and sulphation (85%-90%). The remaining drug is either oxidised by cytochrome P450 isoenzymes to form a toxic metabolite, N-acetyl-p-benzoquinone-imine (5%-10%), or excreted unchanged in urine (5%). N-acetyl-p-benzoquinone-imine is further neutralised by glutathione and excreted in urine. In cases of paracetamol overdose, the accumulation of N-acetyl-p-benzoquinone-imine may lead to acute liver failure. Additionally, paracetamol toxicity is more common in patients with chronic liver diseases or malnutrition. Pharmacokinetic studies have indicated that paracetamol absorption is not altered in older people compared with younger individuals. Nonetheless, both the volume of distribution and clearance of paracetamol metabolites decline with age, especially in frail older people.7 Thus, older people also have a greater risk of paracetamol-induced hepatotoxicity.
 
In this issue of the Hong Kong Medical Journal, Tsang et al8 present a territory-wide study of paracetamol-induced hepatotoxicity based on data from 3873 cases of drug-induced poisoning. After the exclusion of ineligible patients, 76 cases were included in the analysis. The findings showed that age >80 years, low body weight (<50 kg), prolonged exposure (>2 days), daily dose >3 g, and malnutrition (documented insufficient energy intake for >1 week) were risk factors for death or acute liver failure.8 Among these risk factors, prolonged paracetamol use (OR=16.9), older age (OR=7.2), and higher paracetamol dosage (OR=7.2) displayed the strongest effects.8 The findings are consistent with the STOPP/START criteria (Screening Tool of Older Persons’ Prescriptions and Screening Tool to Alert to Right Treatment), which recommend that the daily dose of paracetamol should not exceed 3 g in older people (aged ≥65 years) with malnutrition (body mass index ≤18 kg/m2 or chronic liver diseases9 due to the risk of hepatotoxicity. Furthermore, Tsang et al8 reported other remarkable findings. First, the majority (60.5%) of paracetamol users had pain or fever. Second, over one-third (34.2%) of paracetamol overdose cases were related to cognitive impairment. However, the study had limitations of retrospective design and a modest number of included patients.8
 
Hong Kong is a rapidly ageing society. Cognitive impairment affects one in 10 people aged ≥70 years and one in three people aged ≥85 years.10 11 Many older people attend multiple medical appointments in public healthcare clinics. Concomitant care in both private and public clinics is also common. Furthermore, they have easy access to paracetamol or paracetamol-containing combination products from community pharmacies. Thus, these individuals have a risk of paracetamol overdose through the use of multiple sources.12 Family physicians and community pharmacists play important roles in ensuring medication reconciliation for frail older people with multiple co-morbidities and medical appointments.
 
In summary, Tsang et al’s study offers a timely reminder of the need for cautious use of paracetamol when treating frail older people.8 Future prospective studies involving a broader population may help enhance the generalisability of these findings.
 
Author contributions
Both authors contributed equally to the development of the manuscript. Both authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
 
Conflicts of interest
Both authors have declared no conflicts of interest.
 
Funding/support
This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
 
References
1. Ng KF, Tsui SL, Chan WS. Prevalence of common chronic pain in Hong Kong adults. Clin J Pain 2002;18:275-81. Crossref
2. Miu DK, Chan TY, Chan MH. Pain and disability in a group of Chinese elderly out-patients in Hong Kong. Hong Kong Med J 2004;10:160-5.
3. Chan TY. Safety packaging of acetaminophen combination preparations and severity of adult poisoning. J Toxicol Clin Toxicol 1996;34:747-9. Crossref
4. Alchin J, Dhar A, Siddiqui K, Christo PJ. Why paracetamol (acetaminophen) is a suitable first choice for treating mild to moderate acute pain in adults with liver, kidney or cardiovascular disease, gastrointestinal disorders, asthma, or who are older. Curr Med Res Opin 2022;38:811-25. Crossref
5. Caparrotta TM, Carduff E, Dear JW. Paracetamol use in adults. BMJ 2023:383:e070753. Crossref
6. Sharma CV, Mehta V. Paracetamol: mechanisms and updates. Contin Educ Anaesth Crit Care Pain 2014;14:153-8. Crossref
7. Mian P, Allegaert K, Spriet I, Tibboel D, Petrovic M. Paracetamol in older people: towards evidence-based dosing? Drugs Aging 2018;35:603-24. Crossref
8. Tsang WH, Chan CK, Tse ML. Paracetamol-induced hepatotoxicity after normal therapeutic doses in the Hong Kong Chinese population. Hong Kong Med J 2024;30:355-61. Crossref
9. O’Mahony D, Cherubini A, Guiteras AR, et al. STOPP/START criteria for potentially inappropriate prescribing in older people: version 3. Eur Geriatr Med 2023;14:625-32. Crossref
10. Hong Kong Population Projections 2015-2064. Hong Kong: Census and Statistics Department; 2015.
11. Yu R, Chau PH, McGhee SM, et al. Dementia Trends: Impact of the Ageing Population and Societal Implications for Hong Kong. Hong Kong: The Hong Kong Jockey Club; 2010.
12. Wolf MS, King J, Jacobson K, et al. Risk of unintentional overdose with non-prescription acetaminophen products. J Gen Intern Med 2012;27:1587-93. Crossref

Integration of traditional Chinese medicine and Western medicine: some food of thought on clinical liability

Hong Kong Med J 2024 Aug;30(4):268–70 | Epub 28 Jun 2024
© Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
 
EDITORIAL
Integration of traditional Chinese medicine and Western medicine: some food of thought on clinical liability
Albert Lee, MD, LLM1,2,3; KW Tong, JSD, PhD4; Billy CF Chiu, MPH, FHKAM (Family Medicine)1,5,6; Wendy Wong, PhD, RCMP5,7
1 The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China
2 Centre for Medical Ethics and Law, The University of Hong Kong, Hong Kong SAR, China
3 Board of Governors and Education Committee, World Association for Medical Law
4 City University of Hong Kong, Hong Kong SAR, China
5 Hong Kong Association for Integration of Chinese-Western Medicine, Hong Kong SAR, China
6 Department of Family Medicine and Primary Care, The University of Hong Kong, Hong Kong SAR, China
7 Hong Kong Institute of Integrative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
 
Corresponding author: Dr Albert Lee (alee@cuhk.edu.hk)
 
 Full paper in PDF
 
 
In Hong Kong, 50% to 60% of the population consulted traditional Chinese medicine (TCM) practitioners at least once in their lives notwithstanding the wide availability of services from Western medicine (WM).1 A study has shown the concomitant use of TCM and WM by 25.9% of patients in Hong Kong.2 There is a need for better integration clinically and legally, especially when both WM and TCM practitioners are uncertain of their liabilities if any medico-legal incidents arise during co-care. Application of various common-law elements of negligence (duty of care, standard of care, causation and foreseeability) would help to develop deeper insights into how liabilities would fall on different parties.
 
When a patient comes to consult a practitioner, WM or TCM, a doctor-patient relationship is arguably already established. If a patient is under the co-care with prescriptions of both TCM and WM, who owes the duty of care to the patient? A three-pronged test can be used to determine the duty of care3:
  • the proximity (sufficient close) in the relationship between the claimant (patient) and the defendant (practitioner);
  • damage being reasonably foreseeable; and
  • whether the court considers it fair, just and reasonable to impose a duty of the given scope upon the defendant practitioner.
  •  
    Who has the closest relationship with the patient claimant for a particular management? For instance, a patient consulted a WM doctor for back pain with no significant abnormalities detected, and the patient was advised bed rest, with sick leave certification and analgesia if needed. The patient then consulted a TCM practitioner and was prescribed some herbal medicine to take regularly. The patient also took analgesia, and s/he developed an allergic reaction. Who should owe a greater duty of care? Likewise, a patient consulted TCM for health maintenance with a prescription of TCM supplements. The patient then had a bad cough and was diagnosed with bronchitis by a WM doctor, who prescribed a course of antibiotics. The patient developed severe diarrhoea. Which practitioner owed a greater duty of care?
     
    It is the submission of the authors that in the back pain case, the TCM practitioner may have had a closer relationship with the patient claimant upon initiation of regular treatments. The TCM practitioner should ask firstly whether the patient has been prescribed any medication. In the bronchitis case, the WM doctor may have had a closer relationship and should enquire about any concurrent medication including supplements. The patient claimant then bears the burden of proof with respect to whether the medication is likely to cause damage (causation). The defendant practitioner could defend against the claimant’s allegations with scientific evidence. If the best available evidence has not revealed any significant adverse drug interaction, the court may not see it “fair, just and reasonable” to impose a duty on the defendant practitioner (reasonable standard of care).
     
    In WM, the Bolam test is applied, where a doctor is “not guilty of negligence if he has acted in accordance with a practice accepted as proper by a responsible body of medical men skilled in that particular art”.4 Traditional Chinese medicine practitioners hold themselves as practitioners specialised in treatment of certain health conditions, and they might use methods not in perfect line with WM practices, and patients look for TCM because they prefer not to receive WM, should the Bolam test also apply, or should TCM follow its own specific standard of care?5 Let us consider three cases to provide some insights.
     
    In the United Kingdom, Abdur Shakoor was treated by Situ, an herbalist (TCM practitioner) with 5 years’ experience in China possessing both a traditional “medicine” and “modern” medical qualifications, but no British professional medical qualifications. Situ prescribed a course of Chinese herbal remedies for Shakoor’s lipoma.6 Shakoor got very ill and died of liver failure. Post-mortem examination found that his liver contained Bai Xian Pi (白蘚皮), or Dictamnus dasycarpus, which could be hepatotoxic as published in western journals. The judge concluded that as long as the herbalist has complied with the United Kingdom’s laws, not prescribing substances prohibited or regulated by statutes, and taking steps to keep abreast of pertinent information in TCM textbooks and periodicals, this would fulfil the standard of care of a reasonable herbalist.6
     
    In Singapore, Lim Poh Eng,7 a TCM practitioner, was charged criminally negligence in having caused grievous harm to a patient by prescribing colonic washouts without proper training in the procedure and use of equipment, and without any understanding of the risks and complications involved. Lim was convicted after trial and failed on appeal to argue that the standard of negligence in criminal cases should be higher than the civil standard. The High Court ruled that a TCM practitioner embanking on management without prior knowledge and training can be found negligent.
     
    Practitioners providing TCM or complementary and alternative medicine for management should provide evidence to create a hypothetical standard of care, otherwise the same standard will apply as WM. A United States case, Gonzalez,8 provides a legal reference. Dr Gonzalez (defendant doctor) initiated a cancer treatment including pancreatic enzymes, specific diets, vitamin and mineral supplements, animal organs extracts, and coffee enemas. Such departure from good and accepted medical practice was a proximate cause of the claimant’s injuries. If the treatment risks and the alternatives had been appropriately given, a reasonably prudent person in the claimant’s position would not have agreed.
     
    The Bolam4 test can still be applied to TCM/complementary and alternative medicine, in accordance with the standard of care provided by responsible TCM practitioners skilled in that particular field. This is particularly important for the ‘but for’ test to prove causation: “but for the defendant’s negligence, would the claimant suffer injuries?” In a claim, the claimant bears the burden of proof, and the defendant doctor can adduce expert opinions to rebut. In the United Kingdom case Wilsher v Essex,9 a junior doctor mistakenly inserted a catheter into a vein instead of an artery in a preterm baby for oxygen monitoring and excess oxygen was given, which may be a possible cause of blindness but not a definite cause. So, the claim failed in causation. The damage must not be too remote or unforeseeable as in Goodwill,10 where a doctor did not owe a duty of care for contraceptive advice to the person having sexual relationship in future after vasectomy.
     
    Healthcare practitioners can refer to the basic doctrine of bio-medical ethics to avoid medical mishaps.11 Identification of the ‘material risk’ in adopting ‘patient-centred’ care, particularly after the leading judgement of Montgomery12 in the United Kingdom Supreme Court, would enable both WM and TCM practitioners to understand why patients seek alternative treatments in line with the principles of autonomy and also justice and fidelity,13 acting for the best interests for patients. However, patients should understand the limitations that practitioners of TCM and WM might not fully comprehend the practices on other side. They can only advise on the benefits of treatment of their own specialities as well as the potential harmful effects (beneficence and non-malfeasance). It is the authors’ submission that it is not fair, just and reasonable to ask WM doctors to be liable for any harmful effects of treatment under TCM and vice versa.
     
    There is also concern of liability of referring patients from each side. The basic principle is whether the alternative therapeutic options are generally accepted within the medical community and a referral to a medical specialist usually does not attract malpractice liability, so referring doctors ought to know, through reasonable inquiry, the credentials of the practitioner to whom they refer.14 Another concern is vicarious liability if the TCM practitioners are employed by or affiliated with an institution. A key factor is the degree of control that Chief Medical Executives, usually WM doctors, have over TCM practitioners. United Kingdom court cases provide good references. In Barclays Bank, the Supreme Court held that the bank was not vicariously liable by having referred its employees to doctors for pre-employment check if an employee was subsequently sexually harassed by a doctor referred.15 In Christian Brothers, the Supreme Court discussed the test of control that “[m]any employees apply a skill or expertise that is not susceptible to direction by anyone else in the company that employs them. Thus, the significance of control today is that the employer can direct what the employee does, not how he does it.” (para 36).16 Chief Medical Executives can only control that their TCM practitioners comply with law and regulations, but not how those practitioners consult with patients. This is particularly important when a complaint is filed against a Chief Medical Executive regarding the performance of a TCM practitioner.
     
    When patient is under co-care of a TCM practitioner and a WM doctor, there should be clear delineation of the duties and standard of care in those particular circumstances. Regulatory bodies should examine causation under co-care to determine issues of liability. If a WM/TCM practitioner embanks on management under other’s domain, the standard of care required is that of an ordinary skilled person exercising and professing to have the special skill as in Lim7 and Wilsher9 (the House of Lords held that a junior doctor owes the same duty of care and standard of care as a qualified doctor). Structured inter-professional education and research can drive integration with better understanding of the clinical science of each other.17 18 With the integrated Chinese-Western Medicine Programme executed by the Hospital Authority for cancer care, stroke, and low back pain since 2014, an integrated healthcare framework should be shared among the key stakeholders to ensure patient safety for definition of clear professional boundaries and roles.
     
    Author contributions
    All authors have contributed to the concept, review and analysis of literature and critical revision of the manuscript for important intellectual content. A Lee is responsible for the first draft. All authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
     
    Conflicts of interest
    All authors have disclosed no conflicts of interest.
     
    Declaration
    Content in this presentation is intended solely to provide general discussion concerning medico-legal perspective of Integrated Chinese and Western Medicine. It is not intended as legal or medical advice. Legal or medical advice should be obtained from qualified legal counsel or other professionals to address specific facts and circumstances and to ensure compliance with applicable laws and standards. This paper is written in personal capacity of the authors and the opinions expressed therein do not represent the organisations which they work for or affiliated with.
     
    Funding/support
    This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
     
    References
    1. Wong W, Lam CL, Bian XZ, Zhang ZJ, Ng ST, Tung S. Morbidity pattern of traditional Chinese medicine primary care in the Hong Kong population. Sci Rep 2017;7:7513. Crossref
    2. Leung GK, Wong SW, Ng GK, Hung KN. Concomitant use of Western and Chinese medicine treatments in neurosurgical patients in Hong Kong. Chin J Integr Med 2011 Jul 30. Crossref
    3. Caparo Industries plc v Dickman [1990] UKHL 2 (House of Lords).
    4. Bolam v Friern Health Management Committee [1957] 1 WLR 582 (Queen’s Bench).
    5. Raposo VL. Complementary and alternative medicine, medical liability and the proper standard of care. Complement Ther Clin Pract 2019;35:183-8. Crossref
    6. Estate of Shakoor (deceased) v Situ (t/a Eternal Health Co) [2001] 1 WLR 410; All ER 181 (Queen’s Bench).
    7. Lim Poh Eng v Public Prosecutor [1999] 1 SLR(R) 428 (High Court).
    8. Charell v Gonzalez [1997] 173 Misc.2d 227; 660 N.Y.S. 2d 665 (N.Y. Sup.Ct.1997) (Supreme Court of New York).
    9. Wilsher v Essex [1988]. AC 1074 (House of Lords).
    10. Goodwill v British Pregnancy Advice Service [1996] 7 Med LR 129 (Court of Appeal).
    11. Beauchamp TL, Childress JF. Principles of biomedical ethics. Oxford (Great Britain): Oxford University Press; 1989.
    12. Lee A. ‘Bolam’ to ‘Montgomery’ is result of evolutionary change of medical practice towards ‘patient-centered care’. Postgrad Med J 2017;93:46-50. Crossref
    13. Tarvydas VM, Cottone RR. The Code of Ethics for Professional Rehabilitation Counselors: what we have and what we need. Rehabil Couns Bull 2000;43:188-96. Crossref
    14. Cohen MH. Legal and ethical issues in complimentary medicine: a United States perspective. Med J Aust 2004;181:168-9. Crossref
    15. Barclays Bank plc v Various Claimants [2020] UKSC 13 (Supreme Court).
    16. The Catholic Child Welfare Society and others v Various Claimants (FC) and The Institute of the Brothers of the Christian Schools and others [2012] UKSC 56 (Supreme Court), UK (“Christian Brothers”).
    17. Chiu SW, Sze TO. Revival or innovation? Chinese medicine at the crossroads of professionalization in Hong Kong. SSM–Qualitative Research in Health 2021;1:100004. Crossref
    18. Perharic-Walton L, Murray V. Toxicity of Chinese herbal remedies. Lancet 1992;340:674. Crossref

    Maternal vaccination: a promising preventive strategy to protect infants from respiratory syncytial virus

    Hong Kong Med J 2024 Aug;30(4):264–7 | Epub 8 Jul 2024
    © Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
     
    EDITORIAL
    Maternal vaccination: a promising preventive strategy to protect infants from respiratory syncytial virus
    Mike YW Kwan, MSc, MRCPCH1,2; Patrick CY Chong, MRCPCH, FHKAM (Paediatrics)3; Gilbert T Chua, MB, BS, MRCPCH2,4; Marco HK Ho, MD, FRCPCH5; Liona C Poon, MD, FRCOG6
    1 Department of Paediatrics and Adolescent Medicine, Princess Margaret Hospital, Hong Kong SAR, China
    2 Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
    3 Virtus Medical Group, Hong Kong SAR, China
    4 Allergy Centre, Union Hospital, Hong Kong SAR, China
    5 Lee Tak Hong Allergy Centre, Hong Kong Sanatorium & Hospital, Hong Kong SAR, China
    6 Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
     
    Corresponding author: Dr Mike YW Kwan (kwanyw1@ha.org.hk)
     
     Full paper in PDF
     
     
    Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory tract infection (ALRTI) in early childhood.1 2 In most patients, RSV infection is self-limiting and manifests as an upper respiratory illness.1 However, in high-risk infants and young children, RSV infection can manifest as bronchiolitis, pneumonia, and acute respiratory failure; it may require hospitalisation or mechanical ventilation and potentially result in death.1 Risk factors for severe illness in early childhood include prematurity, young age, and underlying conditions (ie, congenital heart disease, chronic lung disease, and neurodevelopmental conditions).1 3
     
    Respiratory syncytial virus circulates year-round globally but peaks during the winter months in temperate regions and the rainy season in tropical climates.4 In Hong Kong, RSV activity peaks from March to August, when relative humidity is elevated and wind speed is low.5 6 An understanding of RSV seasonality facilitates effective public health planning and resource allocation.
     
    Whereas the implementation of infection control measures during the coronavirus disease 2019 (COVID-19) pandemic effectively flattened the infection curve, the subsequent relaxation of such measures had severe impacts on RSV epidemiology and its seasonal patterns.7 Studies in multiple countries revealed an off-season RSV epidemic among children aged <5 years after the peak of the COVID-19 pandemic,8 9 10 indicating a major shift in seasonality and the need for continuous RSV surveillance.
     
    Although RSV is a well-recognised threat in early childhood,2 local data concerning RSV epidemiology and disease burden remain scarce due to the lack of systematic collection methods.5 6 The under-recognition of RSV as a substantial contributor to morbidity and mortality among children might also explain the scarcity of local prevalence data. In Hong Kong, RSV currently is not considered a notifiable communicable disease. Most patients with clinical features of acute respiratory infection are offered laboratory testing, particularly in clinics with access to point-of-care testing facilities. Because respiratory viruses cause nonspecific symptoms, laboratory testing to identify the infectious agent is essential for guided management strategies.1 11 Both rapid antigen diagnostic tests and nucleic acid assays are common laboratory tests for RSV detection, although nucleic acid assays have higher diagnostic accuracy than rapid antigen diagnostic tests.12 The development of multiplex nucleic acid assays and rapid antigen diagnostic tests has allowed for the simultaneous detection of various respiratory pathogens13; however, the lack of access to subsidised diagnostic tests often limits their clinical utility.
     
    In the absence of sufficient local prevalence data, it is important to prioritise the implementation of territory-wide RSV surveillance and promote the use of laboratory testing for patients with suspected acute respiratory infection. Surveillance data can help understand local RSV epidemiology and disease burden (particularly among infants aged ≤6 months); it can also inform local vaccination policy.
     
    Globally, there were approximately 33.0 million cases of RSV-related ALRTI among children aged <5 years in 2019, including 3.6 million hospitalisations.2 Notably, there were 101 400 RSV-attributable deaths; of these, 97% occurred in low- and middle-income countries, and 45% occurred in children aged <6 months.2 In 1999, the estimated annual incidence of RSV-related hospitalisation in Hong Kong was 2.5 cases per 1000 children aged <5 years, with a mortality rate of 0.15% among hospitalised children.5
     
    The economic burden of RSV infection is substantial. The estimated global medical cost of RSV infection in young children was EUR€4.82 billion in 2017; hospitalisation costs constituted 55% of the global RSV economic burden, and high-income countries carried 35% of the burden.14 In Hong Kong, the estimated annual healthcare expenditure for RSV-related ALRTI was HK$6.67 million.5
     
    Multiple studies have shown that severe RSV infection in early childhood is associated with long-term respiratory sequelae (ie, decreased pulmonary function,15 wheezing,16 17 and the development of atopic asthma and clinical allergy18 19), emphasising the high actual disease burden.
     
    Given the absence of specific treatment for RSV infection, the current approach to managing RSV infection focuses on supportive care.1 11 Moreover, although monoclonal antibody remains a promising approach for RSV prevention in high-risk paediatric patients,20 a safe and effective RSV vaccine remains necessary. Considering the naïve immune system and challenges associated with neonatal vaccination, active immunisation of pregnant women during the third trimester is a viable approach to protect neonates from vaccine-preventable diseases.21
     
    Previous efforts to develop various types of RSV vaccines have yielded no positive outcomes.22 Efforts to understand structural differences in the fusion (F) glycoprotein between its pre-F and pro-F conformations have led to the development of an effective RSV vaccine.22 The RSV pre-F protein (RSVpreF) is the target for vaccine development because it is an immunologically important antigen with high conservation across all known RSV subgroups.22
     
    In August 2023, the United States Food and Drug Administration approved the RSVpreF bivalent vaccine as the first and only vaccine for use in pregnant women to protect infants (birth until 6 months of age) from developing RSV-related ALRTI and severe ALRTI. The decision was based on results from the phase III MATISSE study (Maternal Immunization Study for Safety and Efficacy), which showed that the RSVpreF vaccine had efficacies of 81.8% and 69.4% in preventing medically attended severe RSV-related ALRTI among newborns within 3 and 6 months after birth, respectively.23 No safety signals were detected in maternal participants or their infants up to 24 months of age.23 Moreover, concurrent administration of RSVpreF with either tetanus, diphtheria, and pertussis or inactivated influenza vaccine was immunogenic and well-tolerated by non-pregnant women and older adults, respectively.24 25
     
    In October 2023, the United States Centers for Disease Control and Prevention issued an official recommendation regarding the administration of a single dose of RSVpreF bivalent vaccine to pregnant women at 32 to 36 weeks of gestation for the prevention of RSV-related ALRTI in infants.26
     
    Similar to the maternal tetanus, diphtheria, and pertussis vaccination programme, strong government support for including the RSV vaccine in the Vaccination Subsidy Scheme is needed to encourage its uptake. Importantly, RSV vaccination and counselling should be offered by obstetricians during routine prenatal care visits to reduce additional appointments, waiting, and travelling time.27 28 29 Strong collaborations between obstetricians and paediatricians allow for effective dissemination of public messaging; obstetricians can counsel expectant mothers about vaccine safety and benefits, while paediatricians can reinforce the messaging to the general public.
     
    Clinicians should be equipped with evidence-based information to effectively advocate for maternal RSV vaccination. Public health agencies and professional bodies should collaborate to develop educational materials for the medical community, such as clinical practice guidelines, consensus recommendations, and continuing medical education materials. Clinical guidelines for simplified immunisation schedules, achieved by combining the administration of two or more vaccines, could address concerns related to vaccine hesitancy.
     
    Government-led public education campaigns should address knowledge gaps concerning the RSV disease burden in the paediatric population to promote vaccine confidence and encourage vaccination uptake. All campaign materials should be developed in multiple languages, made available in various formats, and disseminated through various platforms to maximise the reach of vaccination campaigns.
     
    Additional data are needed to achieve full support for maternal RSV vaccination. Data regarding the duration of protection conferred by maternal vaccination could provide insights into herd immunity and the timing of booster vaccination for children aged ≤2 years. Investigations of whether maternal RSV-specific antibodies are present in the breast milk of RSV-vaccinated mothers could raise the possibility of postnatal RSV vaccination for cases in which the vaccine is not administered during pregnancy.
     
    Author contributions
    All authors contributed to the development of the manuscript. All authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
     
    Conflicts of interest
    LC Poon has received speaker fees and consultancy payments from Roche Diagnostics and Ferring Pharmaceuticals. Additionally, she has received in-kind contributions from Roche Diagnostics, Revvity Inc (formerly PerkinElmer Life and Analytical Sciences), Thermo Fisher Scientific, Ningbo Aucheer Biological Technology Co Ltd, and GE HealthCare. Other authors declare no conflicts of interest.
     
    Funding/support
    Funding for this study was provided by Pfizer Hong Kong. Editorial and medical writing support was provided by Dr Analyn Lizaso from Weber Shandwick Health HK, funded by Pfizer Hong Kong. The funders had no role in study design, data collection/analysis/interpretation or manuscript preparation.
     
    References
    1. Jain H, Schweitzer JW, Justice NA. Respiratory syncytial virus infection in children. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Treasure Island (FL). Available from: https://www.ncbi.nlm.nih.gov/books/NBK459215/". Accessed 13 Oct 2023.
    2. Li Y, Wang X, Blau DM, et al. Global, regional, and national disease burden estimates of acute lower respiratory infections due to respiratory syncytial virus in children younger than 5 years in 2019: a systematic analysis. Lancet 2022;399:2047-64. Crossref
    3. Kaler J, Hussain A, Patel K, Hernandez T, Ray S. Respiratory syncytial virus: a comprehensive review of transmission, pathophysiology, and manifestation. Cureus 2023;15:e36342. Crossref
    4. Li Y, Reeves RM, Wang X, et al. Global patterns in monthly activity of influenza virus, respiratory syncytial virus, parainfluenza virus, and metapneumovirus: a systematic analysis. Lancet Glob Health 2019;7:e1031-45. Crossref
    5. Chan PK, Sung RY, Fung KS, et al. Epidemiology of respiratory syncytial virus infection among paediatric patients in Hong Kong: seasonality and disease impact. Epidemiol Infect 1999;123:257-62. Crossref
    6. Lee SH, Hon KL, Chiu WK, Ting YW, Lam SY. Epidemiology of respiratory syncytial virus infection and its effect on children with heart disease in Hong Kong: a multicentre review. Hong Kong Med J 2019;25:363-71. Crossref
    7. Abu-Raya B, Viñeta Paramo M, Reicherz F, Lavoie PM. Why has the epidemiology of RSV changed during the COVID-19 pandemic? EClinicalMedicine 2023;61:102089. Crossref
    8. Eden JS, Sikazwe C, Xie R, et al. Off-season RSV epidemics in Australia after easing of COVID-19 restrictions. Nat Commun 2022;13:2884. Crossref
    9. Bardsley M, Morbey RA, Hughes HE, et al. Epidemiology of respiratory syncytial virus in children younger than 5 years in England during the COVID-19 pandemic, measured by laboratory, clinical, and syndromic surveillance: a retrospective observational study. Lancet Infect Dis 2023;23:56-66. Crossref
    10. Zheng Z, Warren JL, Artin I, Pitzer VE, Weinberger DM. Relative timing of respiratory syncytial virus epidemics in summer 2021 across the United States was similar to a typical winter season. Influenza Other Respir Viruses 2022;16:617-20. Crossref
    11. Ralston SL, Lieberthal AS, Meissner HC, et al. Clinical practice guideline: the diagnosis, management, and prevention of bronchiolitis. Pediatrics 2014;134:e1474-502. Crossref
    12. Chartrand C, Tremblay N, Renaud C, Papenburg J. Diagnostic accuracy of rapid antigen detection tests for respiratory syncytial virus infection: systematic review and meta-analysis. J Clin Microbiol 2015;53:3738-49. Crossref
    13. Ferrani S, Prazuck T, Béchet S, Lesne F, Cohen R, Levy C. Diagnostic accuracy of a rapid antigen triple test (SARS-CoV- 2, respiratory syncytial virus, and influenza) using anterior nasal swabs versus multiplex RT-PCR in children in an emergency department. Infect Dis Now 2023;53:104769. Crossref
    14. Zhang S, Akmar LZ, Bailey F, et al. Cost of respiratory syncytial virus–associated acute lower respiratory infection management in young children at the regional and global level: a systematic review and meta-analysis. J Infect Dis 2020;222(Suppl 7):S680-7. Crossref
    15. Verwey C, Ramocha L, Laubscher M, et al. Pulmonary sequelae in 2-year-old children after hospitalisation for respiratory syncytial virus lower respiratory tract infection during infancy: an observational study. BMJ Open Respir Res 2023;10:e001618. Crossref
    16. Carbonell-Estrany X, Pérez-Yarza EG, García LS, et al. Long-term burden and respiratory effects of respiratory syncytial virus hospitalization in preterm infants—the SPRING study. PLoS One 2015;10:e0125422. Crossref
    17. Ruotsalainen M, Piippo-Savolainen E, Hyvärinen MK, Korppi M. Respiratory morbidity in adulthood after respiratory syncytial virus hospitalization in infancy. Pediatr Infect Dis J 2010;29:872-4. Crossref
    18. Sigurs N, Gustafsson PM, Bjarnason R, et al. Severe respiratory syncytial virus bronchiolitis in infancy and asthma and allergy at age 13. Am J Respir Crit Care Med 2005;171:137-41. Crossref
    19. Sigurs N, Aljassim F, Kjellman B, et al. Asthma and allergy patterns over 18 years after severe RSV bronchiolitis in the first year of life. Thorax 2010;65:1045-52. Crossref
    20. Sun M, Lai H, Na F, et al. Monoclonal antibody for the prevention of respiratory syncytial virus in infants and children: a systematic review and network meta-analysis. JAMA Netw Open 2023;6:e230023. Crossref
    21. Crofts KF, Alexander-Miller MA. Challenges for the newborn immune response to respiratory virus infection and vaccination. Vaccines (Basel) 2020;8:558. Crossref
    22. Mazur NI, Higgins D, Nunes MC, et al. The respiratory syncytial virus vaccine landscape: lessons from the graveyard and promising candidates. Lancet Infect Dis 2018;18:e295-311. Crossref
    23. Kampmann B, Madhi SA, Munjal I, et al. Bivalent prefusion F vaccine in pregnancy to prevent RSV illness in infants. N Engl J Med 2023;388:1451-64. Crossref
    24. Peterson JT, Zareba AM, Fitz-Patrick D, et al. Safety and immunogenicity of a respiratory syncytial virus prefusion F vaccine when coadministered with a tetanus, diphtheria, and acellular pertussis vaccine. J Infect Dis 2022;225:2077-86. Crossref
    25. Falsey AR, Walsh EE, Scott DA, et al. Phase 1/2 randomized study of the immunogenicity, safety, and tolerability of a respiratory syncytial virus prefusion F vaccine in adults with concomitant inactivated influenza vaccine. J Infect Dis 2022;225:2056-66. Crossref
    26. Fleming-Dutra KE, Jones JM, Roper LE, et al. Use of the Pfizer respiratory syncytial virus vaccine during pregnancy for the prevention of respiratory syncytial virus–associated lower respiratory tract disease in infants: recommendations of the Advisory Committee on Immunization Practices—United States, 2023. MMWR Morb Mortal Wkly Rep 2023;72:1115-22. Crossref
    27. Tarrant MA, Fong DY, Lee IL, Sing C, Yuen CY. Prevalence of maternal immunisation with seasonal influenza vaccine in Hong Kong. Hong Kong Med J 2016;22 Suppl 7:4-5.
    28. Attwell K, Betsch C, Dubé E, et al. Increasing vaccine acceptance using evidence-based approaches and policies: insights from research on behavioural and social determinants presented at the 7th Annual Vaccine Acceptance Meeting. Int J Infect Dis 2021;105:188-93. Crossref
    29. Cheung WL, Law JY. The knowledge, perceptions, and attitudes toward vaccination in pregnancy, pertussis, and pertussis vaccination during pregnancy among pregnant women in Hong Kong. J Obstet Gynaecol Res 2021;47:1556-66. Crossref

    Mind the gap in kidney care: translating what we know into what we do

    © Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
     
    EDITORIAL
    Mind the gap in kidney care: translating what we know into what we do
    Valerie A Luyckx, MD1,2,3 #; Katherine R Tuttle, MD4,5 #; Dina Abdellatif, MD6 †; Ricardo Correa-Rotter, MD7 †; Winston WS Fung, MBBChir (Cantab), FRCP (Lond)8; Agnès Haris, MD, PhD9 †; LL Hsiao, MD2 †; Makram Khalife, BA10 ‡; Latha A Kumaraswami, BA11 †; Fiona Loud, BA10 ‡; Vasundhara Raghavan, BA10 ‡; Stefanos Roumeliotis, MD12; Marianella Sierra, BA10 ‡; Ifeoma Ulasi, MD13 †; Bill Wang, BA10 ‡; SF Lui, MD14 †; Vassilios Liakopoulos, MD, PhD12 †; Alessandro Balducci, MD15 †; for the World Kidney Day Joint Steering Committee
    1 Department of Public and Global Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
    2 Renal Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, United States
    3 Department of Paediatrics and Child Health, University of Cape Town, Cape Town, South Africa
    4 Providence Medical Research Center, Providence Inland Northwest Health, Spokane, United States
    5 Nephrology Division, Department of Medicine, University of Washington, Seattle, United States
    6 Department of Nephrology, Cairo University Hospital, Cairo, Egypt
    7 Department of Nephrology and Mineral Metabolism, National Medical Science and Nutrition Institute Salvador Zubiran, Mexico City, Mexico
    8 Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
    9 Nephrology Department, Péterfy Hospital, Budapest, Hungary
    10 International Society of Nephrology Patient Liaison Advisory Group
    11 Tamilnad Kidney Research Foundation, Chennai, India
    12 2nd Department of Nephrology, AHEPA University Hospital Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
    13 Department of Medicine, College of Medicine, University of Nigeria, Ituku-Ozalla, Enugu, Nigeria
    14 Division of Health System, Policy and Management, The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China
    15 Italian Kidney Foundation, Rome, Italy
    # Equal contribution
    Members of the World Kidney Day Joint Steering Committee
    Patient representatives of the Patient Liaison Advisory Group of the International Society of Nephrology
     
    Corresponding author: Dr Valerie A Luyckx (valerie.luyckx@uzh.ch)
     
     Full paper in PDF
     
    Abstract
    Historically, it takes an average of 17 years to move new treatments from clinical evidence to daily practice. Given the highly effective treatments now available to prevent or delay kidney disease onset and progression, this is far too long. The time is now to narrow the gap between what we know and what we do. Clear guidelines exist for the prevention and management of common risk factors for kidney disease, such as hypertension and diabetes, but only a fraction of people worldwide with these conditions are diagnosed, and even fewer receive appropriate treatment. Similarly, the vast majority of people living with kidney disease are unaware of their condition, because in the early stages it is often silent. Even among diagnosed patients, many do not receive appropriate treatment for kidney disease. Considering the serious consequences of kidney disease progression, kidney failure, or death, it is imperative to initiate treatments early and appropriately. Opportunities to diagnose and treat kidney disease early must be maximised, starting at the primary care level. Many systematic barriers exist, encompassing patient, clinician, health system, and societal factors. To preserve and improve kidney health for everyone everywhere, each of these barriers must be acknowledged so that sustainable solutions are developed and implemented without further delay.
     
     
    At least 1 in 10 people worldwide is living with a kidney disease.1 According to the Global Burden of Disease study, >3.1 million deaths were attributed to kidney dysfunction in 2019, making it the seventh leading risk factor for mortality worldwide (Fig 1 and online supplementary Fig).2 However, global mortality from all kidney diseases may actually range from 5 to 11 million per year if the mortality rate also includes estimated lives lost from acute kidney injury and lack of access to renal replacement therapy for kidney failure (KF), especially in lower-resource settings.3 These high global mortality rates reflect disparities in prevention, early detection, diagnosis, and treatment of chronic kidney disease (CKD).4 Mortality rates from CKD are especially high in some regions, particularly Central Latin America and Oceania (islands of the South Pacific Ocean), highlighting the need for urgent action.5
     

    Figure 1. Top 10 global risk factors for mortality, all ages, 2019. Kidney dysfunction (defined as estimated glomerular filtration rate <60 mL/min per 1.73 m2 or albumin-to-creatinine ratio ≥30 mg/g) was the seventh-highest global level 3 risk factor for death in 2019 (red). The three leading global risk factors for kidney diseases, including hypertension, diabetes, and overweight/obesity, are also leading global risk factors for mortality (green); therefore, holistic strategies are required to simultaneously address all risk factors. Rankings are based on millions of deaths attributed to each risk factor. Error bars depict confidence intervals. Global rankings of kidney dysfunction stratified by World Bank income category and sex are presented in online supplementary Figure. Data in this figure were obtained from the Global Burden of Disease Study2
     
    Chronic kidney disease also represents a substantial global economic burden, with exponentially increasing costs as CKD progresses, due to the costs of dialysis and transplantation, as well as multiple co-morbidities and complications that accumulate over time.6 7 In the United States, Medicare fee-for-service spending for all beneficiaries with CKD was US$86.1 billion in 2021 (22.6% of total expenditures).8 Data from many lower-resource settings, where most healthcare spending comprises out-of-pocket costs, are absent. A recent study in Vietnam showed that the perpatient cost of CKD was higher than the gross domestic product per capita.7 In Australia, it has been estimated that early diagnosis and prevention of CKD could save the health system AU$10.2 billion over 20 years.9
     
    Although there is regional variation in the causes of CKD, the risk factors with the highest population-attributable factors for age-standardised CKD-related disease-adjusted life years are hypertension (51.4%), a high fasting plasma glucose level (30.9%), and a high body mass index (26.5%).10 These risk factors are also leading risk factors for mortality worldwide (Fig 1). Only 40% and 60% of people with hypertension and diabetes, respectively, are aware of their diagnosis; considerably smaller proportions of these individuals are receiving treatment and reaching therapeutic targets.11 12 Moreover, at least 1 in 5 people with hypertension and 1 in 3 people with diabetes also have CKD.13
     
    Most cases of CKD can be prevented through healthy lifestyles, prevention and management of risk factors, avoidance of acute kidney injury, optimisation of maternal and child health, mitigation of climate change, and efforts to address social and structural determinants of health.3 Nevertheless, the benefits of some of these measures may only be evident in future generations. Until then, early diagnosis and risk stratification create opportunities to introduce therapies that can slow, halt, or even reverse CKD.14 It is concerning that CKD awareness is particularly low among individuals with kidney dysfunction, such that approximately 80% to 95% of such patients worldwide are unaware of their diagnosis (Fig 2).15 16 17 18 19 20 Therefore, people are dying because of missed opportunities to detect CKD early and deliver optimal care.
     

    Figure 2. Proportion of people with chronic kidney disease (CKD) who are aware of their diagnosis and receiving guideline-recommended care. The proportion of people with CKD who are aware of their diagnosis varies from 7% to 20% worldwide. Knowledge of CKD increases as CKD stage worsens. Among those with a diagnosis of CKD, the average proportion of patients receiving appropriate medication to delay CKD progression (renin-angiotensin-aldosterone system [RAS] inhibitors and sodium-glucose cotransporter 2 [SGLT2] inhibitors) is suboptimal, as are the average proportions of patients achieving target blood pressure, maintaining diabetes control, and receiving nutrition advice. Treatment targets depicted in the figure follow the 2012 Kidney Disease: Improving Global Outcomes guidelines.15 Most data are from higher-resource settings; the corresponding proportions are likely to be lower in lower-resource settings. Data represent the proportions of patients reaching blood pressure <130/80 mm Hg. Data compiled from previous studies15 16 17 18 19 20
     
    Furthermore, CKD is a major risk factor for cardiovascular disease; during kidney disease progression, cardiovascular death and KF become competing risks.21 Indeed, data from the 2019 Global Burden of Disease Study showed that more deaths were caused by kidney dysfunction–related cardiovascular disease (1.7 million deaths) than by CKD itself (1.4 million deaths).2 Therefore, cardiovascular disease management should also be prioritised for people with CKD.
     
    Gaps between knowledge and implementation in kidney care
    Strategies to prevent and treat CKD have been established on the basis of strong evidence collected over the past three decades (Fig 3).19 22 Clinical practice guidelines for CKD are clear; however, adherence to these guidelines is suboptimal (Fig 2).15 19 20
     

    Figure 3. Recommended optimal lifestyle and therapeutic management for chronic kidney disease (CKD) in people with diabetes. Illustration of a comprehensive and holistic approach to optimising kidney health in people with CKD. In addition to key lifestyle adjustments, attention to diabetes, blood pressure (BP), and cardiovascular risk factors is important for kidney care
     
    Regardless of aetiology, management of major risk factors, particularly diabetes and hypertension, forms the basis of optimal care for people with CKD.19 23 In addition to lifestyle changes and risk factor control, the earliest pharmacological agents to demonstrate kidney protection were renin-angiotensin-aldosterone system inhibitors in the form of angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers.14 19 Despite decades of knowledge that these medications have substantial protective effects on renal and cardiovascular function in people with CKD, real-world data from electronic health records show that their use remains low (Fig 2). For example, in the United States, ACEI and angiotensin receptor blocker utilisation rates ranging from 20% to 40% were reported ≥15 years after the most recent approval of these agents for patients with CKD and/or type 2 diabetes.24 Although more recent data show that prescribing rates in this population have improved to 70%, only 40% of such patients continue taking an ACEI or angiotensin receptor blocker for at least 90 days.20 These data indicate gaps in prescribing nephroprotective medication and continuity of care over time, potentially related to cost, lack of patient education, polypharmacy, and adverse effects.25
     
    Although the initial enthusiasm for sodium-glucose cotransporter 2 (SGLT2) inhibitors focused on their benefits for diabetes and cardiovascular disease, unprecedented therapeutic benefits have also been observed regarding CKD. Relative risk reduction levels with SGLT2 inhibitors approach 40% for substantial decreases in estimated glomerular filtration rate, KF, and mortality among populations with several types of CKD, heart failure, or elevated cardiovascular disease risk.26 27 These decreases were observed in addition to benefits from standard-of-care risk factor management and renin-angiotensin-aldosterone system inhibitors. The risks of heart failure, cardiovascular death, and all-cause mortality were also reduced in patients with CKD during SGLT2 inhibitor treatment.26 The addition of SGLT2 inhibitors to renin-angiotensin-aldosterone system inhibitor–based treatment was able to delay the need for renal replacement therapy by several years, depending on the initial timing of combined treatment.28 Moreover, for every 1000 patients with CKD who received an SGLT2 inhibitor in addition to standard therapy, 83 deaths, 19 heart failure–related hospitalisations, 51 instances of dialysis initiation, and 39 episodes of acute renal function worsening were prevented.29
     
    The persistent underuse of these and other guideline-recommended therapies involving SGLT2 inhibitors is concerning (Fig 2).20 24 In the CURE-CKD (Center for Kidney Disease Research, Education and Hope–CKD) Registry, only 5% and 6.3% of eligible patients with CKD and diabetes, respectively, continued to receive SGLT2 inhibitor and glucagon-like peptide-1 receptor agonist therapy at 90 days.18 Notably, a lack of commercial health insurance and the receipt of treatment in community-based (versus academic) institutions were associated with lower likelihoods of SGLT2 inhibitor, ACEI, or angiotensin receptor blocker prescriptions among patients with CKD and diabetes.20 In low- or middle-income countries (LMICs), the gap between evidence and implementation is even wider, considering the high cost and inconsistent availability of these medications, although generics are available.30 Such gaps in delivering optimal care for CKD are unacceptable.
     
    In addition to SGLT2 inhibitors, nonsteroidal mineralocorticoid receptor antagonists have been demonstrated to reduce the risks of CKD progression, KF, cardiovascular events, and mortality, when used in addition to standard-of-care treatment involving renin-angiotensin-aldosterone system inhibitors, among people with type 2 diabetes.31 There is a growing portfolio of promising therapeutic options, including glucagon-like peptide-1 receptor agonists (NCT03819153, NCT04865770), aldosterone synthase inhibitors (NCT05182840), and dual-to-triple incretins (online supplementary Table 1).26 32 Furthermore, there is clear evidence that in patients with CKD and/or type 2 diabetes, glucagon-like peptide-1 receptor agonists reduce cardiovascular events, constitute safe and effective glucose-lowering therapies, and aid in weight loss.32
     
    Historically, it has taken an average of 17 years for new treatments to move from clinical evidence to routine practice.33 Considering that millions of people with CKD die each year, this waiting period is far too long.
     
    Closing the ‘gap’ between what we know and what we do
    Lack of policy and presence of global inequity
    Health policy
    Since the launch of the World Health Organization Global Action Plan for the prevention and control of non-communicable diseases (NCDs) in 2013, there has been global progress in the proportion of countries with a national NCD action plan and dedicated NCD units.34 However, CKD is incorporated into NCD strategies in approximately one-half of countries.4 Policies are required to integrate kidney care within essential health packages under universal health coverage (Fig 4).30 Multisectoral policies must also address social determinants of health, which are major amplifiers of CKD risk and severity that limit people’s opportunities to improve their health.3 A lack of investment in kidney health promotion, along with primary and secondary prevention of kidney diseases, hinders progress.14
     

    Figure 4. Depiction of factors impacting the implementation of timely, high-quality kidney care
     
    Health systems
    Two major goals of universal health coverage are to achieve coverage for essential health services and to reduce financial hardship imposed by healthcare. However, universal health coverage alone is insufficient to ensure adequate access to kidney care.3 Health systems must be strengthened, and quality of care must be prioritised, because poor quality care contributes to more deaths than lack of access in low-resource settings.35 Quality care requires a well-trained healthcare workforce, sustainable availability of accurate diagnostics, reliable infrastructure, and medication supplies; it should be monitored through a continuous quality improvement process (Fig 4). Medication quality, especially in LMICs, may be an additional barrier to successful management of CKD.36 Regulation and monitoring of drug manufacturing and quality standards are important to ensure safe and effective therapies. Strategies to support regulation and quality assurance should be developed according to local circumstances and guidelines, as outlined elsewhere.37
     
    The establishment of a credible case for CKD detection and management based on real-world data regarding risks, interventions, outcomes, and costs will help translate theoretical cost-effectiveness (currently established primarily in high-income countries with minimal data from other countries) into economic reality.30 38 Screening should include evaluation of risk factors for CKD; identification of family history; recognition of potential symptoms (usually advanced, such as fatigue, poor appetite, oedema, and itching); and measurements of blood pressure, serum creatinine, urine components (ie, urinalysis), and urine albumin/protein to creatinine ratio, as outlined in established guidelines.19 39 Early identification of CKD in primary care is expected to lower costs over time by reducing CKD complications and KF. Medications required for kidney care are already included in the World Health Organization Model List of Essential Medicines (Table 1). These medications should be provided at the national level under universal health coverage.40 Additionally, pharmaceutical companies should provide these medications at affordable prices.
     

    Table 1. Essential medicines for patients with kidney disease
     
    Challenges in primary care and clinical inertia
    Healthcare professionals
    The shortage of primary care professionals is exacerbated by inconsistent access to specialists and allied health professionals in both high-income countries and LMICs. It is essential to define roles and responsibilities for kidney care. Solutions may include multidisciplinary team care (primary care physicians, pharmacists, specialists, nurses, therapists, educators, nutritionists, and mental health professionals), well-established mechanisms for collaboration among all elements, and rapid communication technologies (both within health systems and among health professionals) to support care and decision-making.41 42 Brain drain in low-resource settings is a complex issue that must be addressed.
     
    The mobilisation of community health workers yields cost-savings in infectious disease programmes within LMICs; it may facilitate early detection, diagnosis, and management of NCDs.43 Protocolised CKD management, possibly assisted by electronic decision-support systems, may be appropriate for interventions at the community level, with the integration of primary care physicians and aid from nephrologists and other professionals.44 45 For example, in some settings, pharmacists could identify people with diabetes or hypertension exhibiting CKD risk, based on their prescriptions, then offer on-site testing and referral as needed.46 Pharmacists could also provide medication reconciliation and advice regarding safety, effectiveness, and adherence. Social workers and pharmacists can help patients with medications to access suitable programmes.46
     
    Clinical inertia
    Clinical ‘inertia’, commonly regarded as a causative factor in low prescribing rates, has many facets (Fig 4).47 Many knowledge gaps regarding CKD exist among primary care physicians.48 Such gaps can be remedied with focused public and professional education. Additional factors include fear of adverse effects from medication, misaligned incentives within the health system, excessive workload, formulary restrictions, and clinician burnout.47 Furthermore, inconsistent recommendations in guidelines from different professional organisations may enhance confusion. A major barrier to optimal care is the time constraints imposed on individual clinicians. A typical primary care physician in the United States would require approximately 26.7 hours per day to implement guideline-recommended care for a panel of 2500 patients.49 Innovation is required to support guideline implementation, especially for primary care physicians who must follow multiple guidelines to meet the diverse needs of their patients. Electronic health records, reminders, team-based nudges, and decision-support tools offer potentially valuable assistance for quality kidney care in busy clinical practices.50 However, the additional time and effort involved in negotiating pre-authorisations or completing medication assistance programme requests, as well as the need for frequent monitoring of multiple medications, also hinder appropriate prescribing.25 Many primary care physicians only have a few minutes allocated for each patient because of institutional pressure or patient volume. The term ‘inertia’ can hardly be applied to clinicians working at this pace. The number of health professionals worldwide must increase.
     
    Visits for patients with CKD are complex because multimorbidity is common. Such patients are often managed by multiple specialists, leading to fragmentation of care, lack of holistic oversight, and diffusion of responsibility for treatment. Single and combined outcomes analyses have shown that multidisciplinary care improves transition to renal replacement therapy and reduces mortality.51 Novel ‘combined clinic’ models with on-site collaboration and joint participation (eg, with nephrologists, cardiologists, and endocrinologists) may provide substantial benefits for patients in terms of reduced fragmentation of care, logistics, and cost savings.
     
    Patient centeredness
    Health literacy
    Self-management is the most important aspect of kidney care. A patient’s ability to understand his/her health needs, make healthy choices, feel safe and respected in the health system, and obtain psychosocial support are important for promoting health decision-making (Fig 4). Good communication should begin with quality information and confirmation of ‘understanding’ by the patient (and family members, as applicable). Electronic apps and reminders can serve as useful tools that support patients by improving disease knowledge, promoting patient empowerment, and improving self-efficacy; however, a one-size-fits-all approach is unlikely to be successful.52 Important barriers include a lack of patient health information, poor communication, and mistrust, especially in the marginalised and minoritised communities where CKD is common.30 Patients may also be confused by contradictory recommendations among healthcare professionals, as well as conflicting messages in mainstream media. Innovative platforms that improve CKD-related communication between patients and clinicians represent a promising approach to promote optimal prescribing and adherence.53 54
     
    Patient perspectives are essential when designing and testing health strategies to overcome barriers and promote equity. Collaborative care models must include patients, families, and community groups, as well as various types of healthcare professionals, health systems, government agencies, and payers.38 Advocacy organisations, local community groups, and peer navigators with trusted voices and relationships can serve as conduits for education while providing input regarding the development of patient tools and outreach programmes.55 Most importantly, patients must be the focus of their own care.
     
    Medication cost and availability
    In high-income countries, people without health insurance and people with high copays paradoxically pay the highest amounts for essential and non-essential nonessential medications.38 Across LMICs, kidney diseases represent the leading cause of catastrophic health expenditures due to reliance on out-of-pocket payments.56 In 18 countries, four cardiovascular disease medications frequently indicated in CKD (statins, ACEIs, aspirin, and β-blockers) had greater availability in private settings than in public settings; they were mostly unavailable in rural communities, and they were unaffordable for 25% of people in upper middle-income countries and 60% of people in low-income countries.57 Newer therapies may be prohibitively expensive worldwide, especially where generics are not yet available. In the United States, the retail price for a 1-month supply of an SGLT2 inhibitor or finerenone is approximately US$500 to $700; for glucagon-like peptide-1 receptor agonists, the retail price is approximately US$800 to $1200 per month.38 This reliance on out-of-pocket payments for vital, life-saving essential medications is unacceptable (Fig 4).
     
    Special considerations
    Not all kidney diseases are equal. Much of what has been discussed here applies to the most common forms of CKD (eg, diabetes-related and hypertension-related). Some incompletely understood forms of CKD have different risk profiles, including environmental exposures, genetic predisposition, and autoimmune or other systemic disorders. Highly specialised therapies may be required. Pharmaceutical companies should be responsible for ensuring that research studies include disease-representative participants with appropriate representation (eg, race, ethnicity, sex, and gender), that effective drugs are made available after studies, and that the balance between profits and prices is fair and transparent. Many novel therapies are offering new hope for various kidney diseases; once these therapies are approved, there must be no delay in extending benefits to all affected patients (online supplementary Table 1).
     
    An important but often overlooked group consists of children with kidney diseases. This group is especially vulnerable in LMICs, where nephrology services and resources are limited; families must often decide whether to pay for one child’s treatment or support the rest of the family.58 Children with CKD also have a high risk of cardiovascular disease, even in high-income settings, and they require more attention to control risk factors and achieve treatment targets.59
     
    Fostering innovation
    Implementation science and knowledge translation
    Considering that rigorous evidence-based treatments for CKD have been established, implementation must be optimised.60 Implementation research aims to identify effective solutions by understanding how evidence-based practices, often developed in high-income countries, can be integrated into care pathways in lower-resource settings. The management of CKD is suitable for implementation research: optimal therapeutic strategies are known, outcomes are easily measurable, and essential diagnostics and medications already are in place. Crucial components of such research are the identification of local patient preferences and elucidation of challenges. Ministries of health should commit to overcoming identified barriers and scaling up successful and sustainable programmes.
     
    Polypills as an example of simple innovation
    Polypills are attractive on multiple levels: fixed doses of several guideline-recommended medications are present within a single tablet (Table 1), the price is low, the pill burden is reduced, and the regimen is simple.61 Polypills can prevent cardiovascular disease and are cost-effective for patients with CKD.62 More studies are needed, but considering the alternatives of costly renal replacement therapy or premature death, it is likely that polypills will be a cost-effective approach for reducing CKD progression.
     
    Harnessing digital technologies
    The integration of telehealth and other types of remotely delivered care can improve efficiency and reduce costs.63 Electronic health records and registries can support monitoring of quality of care and identify gaps to guide implementation and improve outcomes within an evolving health system that is capable of learning. Artificial intelligence may also be harnessed to stratify risk, personalise medication prescribing, and facilitate adherence.64 The use of telenephrology for communication between primary care physicians and specialists may also be beneficial for patient care.65
     
    Patient perspectives
    Multiple methods can support the identification of patient preferences for CKD care, including interviews, focus groups, surveys, discrete choice experiments, structured tools, and simple conversations.66 67 Many of these methods are currently in the research phase. Clinical translation will require contextualisation and assessments of local and individual acceptability.
     
    The journey of each person living with CKD is unique; however, common challenges and barriers exist. As examples of lived experiences, comments collected from patients about their medications and care are detailed in online supplementary Table 2. These voices must be heard and acknowledged to close gaps and improve the quality of kidney care worldwide.
     
    Call to action
    The current lack of progress in kidney care has been tolerated for far too long. New therapeutic advances offer real hope that many people with CKD can survive without developing KF. The evidence for clinical benefit is overwhelming and unequivocal. These patients cannot wait another 17 years for this evidence to be translated into clinical practice.33 It is time to ensure that all who are eligible for CKD treatment receive this care in an equitable manner.
     
    Known barriers and global disparities in access to diagnosis and treatment must be urgently addressed (Fig 4). To achieve health equity for people with kidney diseases and those at risk of developing kidney diseases, we must raise awareness among policy makers, patients, and the general population; harness innovative strategies to support all cadres of healthcare workers; and balance profits with reasonable prices (Table 2). If we narrow the gap between what we know and what we do, kidney health will become a reality worldwide.
     

    Table 2. Examples of strategies to improve implementation of appropriate chronic kidney disease care
     
    Author contributions
    All authors contributed equally to the conception, preparation, and drafting of the manuscript.
     
    Conflicts of interest
    VA Luyckx is chair of the Advocacy Working Group of the International Society of Nephrology and has no financial disclosures. KR Tuttle has received research grants from the National Institutes of Health (National Institute of Diabetes and Digestive and Kidney Diseases, National Heart, Lung, and Blood Institute, National Center for Advancing Translational Sciences, National Institute on Minority Health and Health Disparities, director’s office), the United States Centers for Disease Control and Prevention, and Travere Therapeutics; and consultancy fees from AstraZeneca, Bayer, Boehringer Ingelheim, Eli Lilly, and Novo Nordisk. She is also chair of the Diabetic Kidney Disease Collaborative for the American Society of Nephrology. R Correa-Rotter is a member of the Steering Committee for World Kidney Day, a member of the Diabetes Committee of the Latin American Society of Nephrology and Hypertension, and a member of the Latin American Regional Board of the International Society of Nephrology. He is also a member of the Steering Committees for the Dapagliflozin and Prevention of Adverse Outcomes in Chronic Kidney Disease (DAPA-CKD) trial (AstraZeneca), the Study Of diabetic Nephropathy with AtRasentan (SONAR) [AbbVie], A Non-interventional Study Providing Insights Into the Use of Finerenone in a Routine Clinical Setting (FINE-REAL) [Bayer], and CKD-ASI (Boehringer Ingelheim). He has received research grants from AstraZeneca, GlaxoSmithKline, Roche, Boehringer Ingelheim, and Novo Nordisk, as well as speaker honoraria from AstraZeneca, Bayer, Boehringer Ingelheim, and Amgen. All other authors have declared no competing interests.
     
    Funding/support
    This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
     
    Declaration
    This article was published in Kidney International (Luyckx VA, Tuttle KR, Abdellatif D, et al. Mind the gap in kidney care: translating what we know into what we do. Kidney Int 2024;105:406-17. https://doi.org/10.1016/j.kint.2023.12.003), and was reprinted concurrently in several journals. The articles cover identical concepts and wording, but vary in minor stylistic and spelling changes, detail, and length of manuscript in keeping with each journal’s style. Any of these versions may be used in citing this article.
     
    Supplementary material
    The supplementary material was provided by the authors and some information may not have been peer-reviewed. Accepted supplementary material will be published as submitted by the authors, without any editing or formatting. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by the Hong Kong Academy of Medicine and the Hong Kong Medical Association. The Hong Kong Academy of Medicine and the Hong Kong Medical Association disclaim all liability and responsibility arising from any reliance placed on the content.
     
    References
    1. Jager KJ, Kovesdy C, Langham R, Rosenberg M, Jha V, Zoccali C. A single number for advocacy and communication-worldwide more than 850 million individuals have kidney diseases. Kidney Int 2019;96:1048-50. Crossref
    2. Institute for Health Metrics and Evaluation (IHME). GBD compare data visualization. Available from: http://vizhub.healthdata.org/gbd-compare. Accessed 18 Nov 2023.
    3. Luyckx VA, Tonelli M, Stanifer JW. The global burden of kidney disease and the sustainable development goals. Bull World Health Organ 2018;96:414-22D. Crossref
    4. International Society of Nephrology. ISN Global Kidney Health Atlas, 3rd ed. Available from: https://www.theisn.org/initiatives/global-kidney-health-atlas/. Accessed 18 Nov 2023.
    5. GBD Chronic Kidney Disease Collaboration. Global, regional, and national burden of chronic kidney disease, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet 2020;395:709-33. Crossref
    6. Vanholder R, Annemans L, Brown E, et al. Reducing the costs of chronic kidney disease while delivering quality health care: a call to action. Nat Rev Nephrol 2017;13:393-409. Crossref
    7. Nguyen-Thi HY, Le-Phuoc TN, Tri Phat N, et al. The economic burden of chronic kidney disease in Vietnam. Health Serv Insights 2021;14:11786329211036011. Crossref
    8. United States Renal Data System. Healthcare expenditures for persons with CKD. Available from: https://usrds-adr.niddk.nih.gov/2023/chronic-kidney-disease/6-healthcare-expenditures- for-persons-with-ckd. Accessed 18 Nov 2023.
    9. Kidney Health Australia. Changing the chronic kidney disease landscape: the economic benefits of early detection and treatment. Available from: https://kidney.org.au/uploads/resources/Changing-the-CKD-landscape-Economic-benefits-of-early-detection-and-treatment.pdf. Accessed 16 Jan 2024.
    10. Ke C, Liang J, Liu M, Liu S, Wang C. Burden of chronic kidney disease and its risk-attributable burden in 137 low-and middle-income countries, 1990-2019: results from the Global Burden of Disease Study 2019. BMC Nephrol 2022;23:17. Crossref
    11. Gregg EW, Buckley J, Ali MK, et al. Improving health outcomes of people with diabetes: target setting for the WHO Global Diabetes Compact. Lancet 2023;401:1302-12. Crossref
    12. Geldsetzer P, Manne-Goehler J, Marcus ME, et al. The state of hypertension care in 44 low-income and middle-income countries: a cross-sectional study of nationally representative individual-level data from 1.1 million adults. Lancet 2019;394:652-62. Crossref
    13. Chu L, Bhogal SK, Lin P, et al. AWAREness of diagnosis and treatment of chronic kidney disease in adults with type 2 diabetes (AWARE-CKD in T2D). Can J Diabetes 2022;46:464-72. Crossref
    14. Levin A, Tonelli M, Bonventre J, et al. Global kidney health 2017 and beyond: a roadmap for closing gaps in care, research, and policy. Lancet 2017;390:1888-917. Crossref
    15. Stengel B, Muenz D, Tu C, et al. Adherence to the Kidney Disease: Improving Global Outcomes CKD guideline in nephrology practice across countries. Kidney Int Rep 2020;6:437-48. Crossref
    16. Chu CD, Chen MH, McCulloch CE, et al. Patient awareness of CKD: a systematic review and meta-analysis of patient-oriented questions and study setting. Kidney Med 2021;3:576-85.e1. Crossref
    17. Ene-Iordache B, Perico N, Bikbov B, et al. Chronic kidney disease and cardiovascular risk in six regions of the world (ISN-KDDC): a cross-sectional study. Lancet Glob Health 2016;4:e307-19. Crossref
    18. Gummidi B, John O, Ghosh A, et al. A systematic study of the prevalence and risk factors of CKD in Uddanam, India. Kidney Int Rep 2020;5:2246-55. Crossref
    19. Kidney Disease: Improving Global Outcomes (KDIGO) Diabetes Work Group. KDIGO 2022 Clinical Practice Guideline for Diabetes Management in Chronic Kidney Disease. Kidney Int 2022;102(5S):S1-127. Crossref
    20. Nicholas SB, Daratha KB, Alicic RZ, et al. Prescription of guideline-directed medical therapies in patients with diabetes and chronic kidney disease from the CURE-CKD Registry, 2019-2020. Diabetes Obes Metab 2023;25:2970-9. Crossref
    21. Grams ME, Yang W, Rebholz CM, et al. Risks of adverse events in advanced CKD: the Chronic Renal Insufficiency Cohort (CRIC) study. Am J Kidney Dis 2017;70:337-46. Crossref
    22. Kidney Disease: Improving Global Outcomes (KDIGO) CKD Work Group. KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int 2024;105(4S):S117-314. Crossref
    23. Kidney Disease: Improving Global Outcomes (KDIGO) Blood Pressure Work Group. KDIGO 2021 Clinical Practice Guideline for the Management of Blood Pressure in Chronic Kidney Disease. Kidney Int 2021;99(3S):S1-87. Crossref
    24. Tuttle KR, Alicic RZ, Duru OK, et al. Clinical characteristics of and risk factors for chronic kidney disease among adults and children: an analysis of the CURE-CKD Registry. JAMA Netw Open 2019;2:e1918169. Crossref
    25. Ismail WW, Witry MJ, Urmie JM. The association between cost sharing, prior authorization, and specialty drug utilization: a systematic review. J Manag Care Spec Pharm 2023;29:449-63. Crossref
    26. Heerspink HJ, Vart P, Jongs N, et al. Estimated lifetime benefit of novel pharmacological therapies in patients with type 2 diabetes and chronic kidney disease: a joint analysis of randomized controlled clinical trials. Diabetes Obes Metab 2023;25:3327-36. Crossref
    27. Nuffield Department of Population Health Renal Studies Group; SGLT2 inhibitor Meta-Analysis Cardio-Renal Trialists' Consortium. Impact of diabetes on the effects of sodium glucose co-transporter-2 inhibitors on kidney outcomes: collaborative meta-analysis of large placebo-controlled trials. Lancet 2022;400:1788-801. Crossref
    28. Fernández-Fernandez B, Sarafidis P, Soler MJ, Ortiz A. EMPA-KIDNEY: expanding the range of kidney protection by SGLT2 inhibitors. Clin Kidney J 2023;16:1187-98. Crossref
    29. McEwan P, Boyce R, Sanchez JJ, et al. Extrapolated longer-term effects of the DAPA-CKD trial: a modelling analysis. Nephrol Dial Transplant 2023;38:1260-70. Crossref
    30. Vanholder R, Annemans L, Braks M, et al. Inequities in kidney health and kidney care. Nat Rev Nephrol 2023;19:694-708. Crossref
    31. Agarwal R, Filippatos G, Pitt B, et al. Cardiovascular and kidney outcomes with finerenone in patients with type 2 diabetes and chronic kidney disease: the FIDELITY pooled analysis. Eur Heart J 2022;43:474-84. Crossref
    32. Tuttle KR, Bosch-Traberg H, Cherney DZ, et al. Post hoc analysis of SUSTAIN 6 and PIONEER 6 trials suggests that people with type 2 diabetes at high cardiovascular risk treated with semaglutide experience more stable kidney function compared with placebo. Kidney Int 2023;103:772-81. Crossref
    33. Rubin R. It takes an average of 17 years for evidence to change practice—the burgeoning field of implementation science seeks to speed things up. JAMA 2023;329:1333-6. Crossref
    34. World Health Organization. Mid-point evaluation of the implementation of the WHO global action plan for the prevention and control of noncommunicable diseases 2013-2020 (NCD-GAP). Volume 1: Report. 2020. Available from: https://cdn.who.int/media/docs/default-source/documents/about-us/evaluation/ncd-gap-final-report.pdf?sfvrsn=55b22b89_5&download=true. Accessed 18 Nov 2023.
    35. Kruk ME, Gage AD, Joseph NT, Danaei G, García-Saisó S, Salomon JA. Mortality due to low-quality health systems in the universal health coverage era: a systematic analysis of amenable deaths in 137 countries. Lancet 2018;392:2203-12. Crossref
    36. Kingori P, Peeters Grietens K, Abimbola S, Ravinetto R. Uncertainties about the quality of medical products globally: lessons from multidisciplinary research. BMJ Glob Health 2023;6(Suppl 3):e012902. Crossref
    37. Pan American Health Organization. Quality control of medicines. Available from: https://www.paho.org/en/topics/quality-control-medicines. Accessed 18 Nov 2023.
    38. Tuttle KR, Wong L, St Peter W, et al. Moving from evidence to implementation of breakthrough therapies for diabetic kidney disease. Clin J Am Soc Nephrol 2022;17:1092-103. Crossref
    39. Kalyesubula R, Conroy AL, Calice-Silva V, et al. Screening for kidney disease in low- and middle-income countries. Semin Nephrol 2022;42:151315. Crossref
    40. Francis A, Abdul Hafidz MI, Ekrikpo UE, et al. Barriers to accessing essential medicines for kidney disease in low- and lower middle-income countries. Kidney Int 2022;102:969-73. Crossref
    41. Rangaswami J, Tuttle K, Vaduganathan M. Cardio-renal-metabolic care models: toward achieving effective interdisciplinary care. Circ Cardiovasc Qual Outcomes 2020;13:e007264. Crossref
    42. Neumiller JJ, Alicic RZ, Tuttle KR. Overcoming barriers to implementing new therapies for diabetic kidney disease: lessons learned. Adv Chronic Kidney Dis 2021;28:318-27. Crossref
    43. Mishra SR, Neupane D, Preen D, Kallestrup P, Perry HB. Mitigation of non-communicable diseases in developing countries with community health workers. Global Health 2015;11:43. Crossref
    44. Joshi R, John O, Jha V. The potential impact of public health interventions in preventing kidney disease. Semin Nephrol 2017;37:234-44. Crossref
    45. Patel A, Praveen D, Maharani A, et al. Association of multifaceted mobile technology-enabled primary care intervention with cardiovascular disease risk management in rural Indonesia. JAMA Cardiol 2019;4:978-86. Crossref
    46. Ardavani A, Curtis F, Khunti K, Wilkinson TJ. The effect of pharmacist-led interventions on the management and outcomes in chronic kidney disease (CKD): a systematic review and meta-analysis protocol. Health Sci Rep 2023;6:e1064. Crossref
    47. Sherrod CF, Farr SL, Sauer AJ. Overcoming treatment inertia for patients with heart failure: how do we build systems that move us from rest to motion? Eur Heart J 2023;44:1970-2. Crossref
    48. Ramakrishnan C, Tan NC, Yoon S, et al. Healthcare professionals’ perspectives on facilitators of and barriers to CKD management in primary care: a qualitative study in Singapore clinics. BMC Health Serv Res 2022;22:560. Crossref
    49. Porter J, Boyd C, Skandari MR, Laiteerapong N. Revisiting the time needed to provide adult primary care. J Gen Intern Med 2023;38:147-55. Crossref
    50. Peralta CA, Livaudais-Toman J, Stebbins M, et al. Electronic decision support for management of CKD in primary care: a pragmatic randomized trial. Am J Kidney Dis 2020;76:636-44. Crossref
    51. Rios P, Sola L, Ferreiro A, et al. Adherence to multidisciplinary care in a prospective chronic kidney disease cohort is associated with better outcomes. PLoS One 2022;17:e0266617. Crossref
    52. Stevenson JK, Campbell ZC, Webster AC, et al. eHealth interventions for people with chronic kidney disease. Cochrane Database Syst Rev 2019;8:CD012379. Crossref
    53. Tuot DS, Crowley ST, Katz LA, et al. Usability testing of the kidney score platform to enhance communication about kidney disease in primary care settings: qualitative think-aloud study. JMIR Form Res 2022;6:e40001. Crossref
    54. Verberne WR, Stiggelbout AM, Bos WJ, van Delden JJ. Asking the right questions: towards a person-centered conception of shared decision-making regarding treatment of advanced chronic kidney disease in older patients. BMC Med Ethics 2022;23:47. Crossref
    55. Taha A, Iman Y, Hingwala J, et al. Patient navigators for CKD and kidney failure: a systematic review. Kidney Med 2022;4:100540. Crossref
    56. Essue BM, Laba TL, Knaul F, et al. Economic burden of chronic ill health and injuries for households in low- and middle-income countries. In: Jamison DT, Gelband H, Horton S, et al, editors. Disease Control Priorities: Improving Health and Reducing Poverty. 3rd ed. The International Bank for Reconstruction and Development/The World Bank; 2017: 121-43. Crossref
    57. Khatib R, McKee M, Shannon H, et al. Availability and affordability of cardiovascular disease medicines and their effect on use in high-income, middle-income, and low-income countries: an analysis of the PURE study data. Lancet 2016;387:61-9. Crossref
    58. Kamath N, Iyengar AA. Chronic kidney disease (CKD): an observational study of etiology, severity and burden of comorbidities. Indian J Pediatr 2017;84:822-5. Crossref
    59. Cirillo L, Ravaglia F, Errichiello C, Anders HJ, Romagnani P, Becherucci F. Expectations in children with glomerular diseases from SGLT2 inhibitors. Pediatr Nephrol 2022;37:2997-3008. Crossref
    60. Donohue JF, Elborn JS, Lansberg P, et al. Bridging the “know-do” gaps in five non-communicable diseases using a common framework driven by implementation science. J Healthc Leadersh 2023;15:103-19. Crossref
    61. Population Health Research Institute. Polypills added to WHO essential medicines list. 2023. Available from: https://www.phri.ca/eml/". Accessed 18 Nov 2023.
    62. Sepanlou SG, Mann JF, Joseph P, et al. Fixed-dose combination therapy for prevention of cardiovascular diseases in CKD: an individual participant data meta-analysis. Clin J Am Soc Nephrol 2023;18:1408-15. Crossref
    63. Dev V, Mittal A, Joshi V, et al. Cost analysis of telemedicine use in paediatric nephrology–the LMIC perspective. Pediatr Nephrol 2024;39:193-201. Crossref
    64. Musacchio N, Zilich R, Ponzani P, et al. Transparent machine learning suggests a key driver in the decision to start insulin therapy in individuals with type 2 diabetes. J Diabetes 2023;15:224-36. Crossref
    65. Zuniga C, Riquelme C, Muller H, Vergara G, Astorga C, Espinoza M. Using telenephrology to improve access to nephrologist and global kidney management of CKD primary care patients. Kidney Int Rep 2020;5:920-3. Crossref
    66. van der Horst DE, Hofstra N, van Uden-Kraan CF, et al. Shared decision making in health care visits for CKD: patients' decisional role preferences and experiences. Am J Kidney Dis 2023;82:677-86. Crossref
    67. Hole B, Scanlon M, Tomson C. Shared decision making: a personal view from two kidney doctors and a patient. Clin Kidney J 2023;16(Suppl 1):i12-9. Crossref

    Bridging the gap in the prevention of respiratory syncytial virus infection among older adults in Hong Kong

    Hong Kong Med J 2024 Jun;30(3):196–9 | Epub 29 May 2024
    © Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
     
    EDITORIAL
    Bridging the gap in the prevention of respiratory syncytial virus infection among older adults in Hong Kong
    Ivan FN Hung, MD (HK), FRCP (Lond)1,2 Ada WC Lin, FHKAM (Medicine), FHKCCM3; Jane CK Chan, MD, PDipID4; Tony NH Chan, FHKAM (Medicine), FRCP (Edin)5; Philip Eng, MMed, FRCP (Lond)6,7; Angus HY Lo, FHKAM (Medicine), FRCP (Edin)8; Martin CS Wong, MD, MPH9,10; William KK Wong, FHKAM (Medicine), FRCP (Edin)5
    1 Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
    2 Gleneagles Hospital Hong Kong, Hong Kong SAR, China
    3 HKSH Medical Group, Hong Kong SAR, China
    4 Hong Kong Chinese Medical Association, Hong Kong SAR, China
    5 The Hong Kong Geriatrics Society, Hong Kong SAR, China
    6 Mount Elizabeth Hospital, Singapore
    7 National University of Singapore, Singapore
    8 Premier Medical Centre, Hong Kong SAR, China
    9 The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
    10 Editor-in-Chief, Hong Kong Medical Journal
     
    Corresponding author: Dr Ivan FN Hung (ivanhung@hku.hk)
     
     Full paper in PDF
     
     
    Respiratory syncytial virus (RSV) is an important pathogen that causes acute respiratory tract illness and exacerbations of chronic cardiopulmonary disease among adults.1 2 3 Although most RSV infections in adults are mild, advanced age, chronic cardiopulmonary disease, and immunocompromising conditions can predispose individuals to higher risks of morbidity and mortality.1 3 4 Respiratory syncytial virus will become an increasingly important threat to countries/regions with an ageing population, such as Hong Kong. In 2046, older persons are projected to constitute 36% of Hong Kong’s total population,5 underscoring the need to better understand the RSV disease burden to protect this vulnerable population.
     
    Respiratory syncytial virus disease burden in older adults is substantial but often underestimated
    Respiratory syncytial virus is a major cause of morbidity and mortality in older adults. In 2019, adults aged >70 years had the highest worldwide mortality rate of 34.5 per 100 000 individuals.5 Recent studies have shown that, in older adults, RSV causes more severe infections than influenza.6 7 Older patients hospitalised for RSV have longer hospital stays, higher risks of pneumonia and bacterial superinfection, a higher risk of intensive care unit admission, a greater likelihood of repeat hospitalisation, and higher in-hospital and 1-year mortality rates than older patients hospitalised for influenza.6 7
     
    Respiratory syncytial virus infection imposes a substantial economic burden on older adults. In the United States, the national direct cost of RSV-related hospitalisations among adults aged ≥60 years was estimated to be US$1.5 to 4.0 billion in 2005.8 Furthermore, severe RSV can cause functional decline and insidious deterioration of respiratory health, along with high mortality, in frail older adults.9 10 11 12 Exacerbations of congestive heart failure and other chronic conditions can substantially contribute to disease burden among older adults.3 13
     
    Changes in respiratory syncytial virus seasonality can hinder reduction of its disease burden
    Respiratory syncytial virus circulation is seasonal, typically peaking between April and November in Hong Kong.14 An understanding of RSV seasonality can facilitate effective public health planning and resource allocation. However, disruptions in RSV seasonality could lead to off-season outbreaks that affect health system performance.14 For example, the implementation of infection control measures during the coronavirus disease 2019 pandemic and their subsequent relaxation has led to an atypical surge in RSV activity across many countries in the post–coronavirus disease 2019 era,15 16 17 highlighting the need for year-long disease surveillance.
     
    Existing challenges that lead to the underestimation of respiratory syncytial virus burden in older adults
    Respiratory syncytial virus infection is challenging to diagnose because of its non-specific clinical symptoms.14 18 Although rapid antigen diagnostic tests and nucleic acid amplification tests are important tools for RSV detection, their diagnostic accuracy in adults is generally poor due to the lower viral load in such patients, especially when upper respiratory tract specimens are used for testing.9 18 19 Therefore, clinicians must be aware of the limitations of current assays while supporting the development of more sensitive assays for adults.
     
    Additionally, the testing rate among adult patients remains suboptimal,14 resulting in underdiagnosis of RSV infection. The absence of disease surveillance protocols and lack of systemic data collection mechanisms lead to further underestimation of the RSV disease burden in Hong Kong.14 Currently, RSV is not one of the statutory notifiable infectious diseases according to the Centre for Health Protection.14 A surveillance system that allows clinicians to submit data regarding positive RSV cases would be helpful in terms of monitoring its incidence and disease burden.
     
    A safe and effective vaccine is needed to reduce respiratory syncytial virus disease burden
    The current approach to managing RSV infection in adults focuses on supportive care.3 Whereas immunoprophylaxis with monoclonal antibodies is recommended for infants and young children, there are no clinical data supporting these treatments for high-risk adults.3 In the absence of guideline-directed management, some clinicians do not recommend RSV testing for adults with suspected acute lower respiratory tract infection (ALRTI). Considering the high RSV disease burden and lack of RSV-specific treatment, a safe and effective vaccine is urgently needed to prevent RSV-related severe illness among high-risk adults.
     
    The quest for an effective RSV vaccine began in the 1960s and encountered multiple obstacles. The discovery of the RSV fusion (F) glycoprotein in its pre-F conformation has renewed interest in vaccine development. The RSV pre-F protein (RSVpreF) has emerged as an attractive candidate vaccine target because of its conserved neutralising epitope.20 21
     
    The multinational phase III RENOIR trial (RSV Vaccine Efficacy Study in Older Adults Immunized against RSV Disease) showed that the bivalent RSVpreF vaccine had respective efficacy rates of 84.4% and 81.0% for preventing ALRTI and medically attended RSV-associated acute respiratory tract illness over two RSV seasons among immunocompetent adults aged ≥60 years.22 Importantly, the RSVpreF vaccine also demonstrated a favourable safety profile. A recent study showed that concomitant administration of RSVpreF and seasonal inactivated influenza vaccine elicited robust RSV serum-neutralising responses and appeared to have a favourable safety profile among adults aged 50 to 85 years,23 thereby supporting annual concomitant immunisation with seasonal inactivated influenza vaccine.
     
    Based on the RENOIR trial, the United States Food and Drug Administration approved bivalent RSVpreF vaccine for use in adults aged ≥60 years.24 Subsequently (in June 2023), the United States Centers for Disease Control and Prevention’s Advisory Committee on Immunisation Practices voted to recommend that adults aged ≥60 years receive a single dose of RSV vaccine through a shared clinical decision-making process.24
     
    Driving the successful implementation of respiratory syncytial virus vaccination in older adults
    It is important to conduct a public awareness campaign that educates the general public about the risks of RSV infections among high-risk individuals, especially older adults. This campaign should address vaccine hesitancy by highlighting the safety and efficacy of vaccines against severe RSV while dispelling misconceptions about the safety of the vaccine.
     
    Additionally, it is imperative to establish a continuous medical education programme focused on respiratory care for primary care physicians and other specialists who manage high-risk patients. This programme should cover the role of diagnostic testing in patients with suspected ALRTI to guide disease management (despite the absence of effective treatment) and vaccination against severe RSV in high-risk populations. Ideally, the programme should emphasise the public health benefits of RSV vaccination beyond reducing disease severity. Moreover, the programme should discuss strategies to encourage vaccination uptake among older adults with cognitive impairment and/or their family members.
     
    Additional research to improve confidence in respiratory syncytial virus vaccination
    Local epidemiological studies could help to define RSV prevalence in general and high-risk populations, quantify the RSV disease burden, and identify its impacts on public health and healthcare services. These data could also aid in defining target populations that would experience the greatest benefit from RSV vaccination. Furthermore, a local cost-effectiveness analysis based on local epidemiological data could help demonstrate the value of RSV vaccination in target populations. Research concerning the durability of protection conferred by an RSV vaccine in high-risk adults could guide appropriate dosing intervals and vaccination schedules. Additional efficacy and safety data concerning the co-administration of an RSV vaccine with other respiratory virus vaccines could support simplified immunisation schedules for adults.
     
    Post-marketing studies could provide additional information regarding the real-world effectiveness and safety of an RSV vaccine in target populations, especially individuals with multimorbidity and immunocompromised conditions. Future real-world studies could also include assessments of vaccine effectiveness in reducing other clinical outcomes, such as the rates of RSV infection, hospitalisation, intensive care unit admission, ventilator use, and mortality.
     
    Author contributions
    All authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
     
    Conflicts of interest
    IFN Hung is an advisory board member for Pfizer, GlaxoSmithKline, AstraZeneca, MSD, and Moderna. P Eng served as an advisory board member for Pfizer, GlaxoSmithKline, AstraZeneca, and Boehringer Ingelheim. MCS Wong is an honorary medical advisor for GenieBiome Ltd, BGI Health (HK) Company Limited, and Sunrise; an advisory committee member for Pfizer; an external expert for GlaxoSmithKline; and a member of the advisory board for AstraZeneca; he has also been paid consultancy fees for providing research advice. Other authors declare no conflicts of interest.
     
    Funding/support
    Funding for this study was provided by Pfizer Hong Kong. Editorial and medical writing support was provided by Weber Shandwick Health HK, funded by Pfizer Hong Kong. The funders had no role in study design, data collection/analysis/interpretation or manuscript preparation.
     
    References
    1. Belongia EA, King JP, Kieke BA, et al. Clinical features, severity, and incidence of RSV illness during 12 consecutive seasons in a community cohort of adults ≥60 years old. Open Forum Infect Dis 2018;5:ofy316. Crossref
    2. Nam HH, Ison MG. Respiratory syncytial virus infection in adults. BMJ 2019;366:l5021. Crossref
    3. Villanueva DH, Arcega V, Rao M. Review of respiratory syncytial virus infection among older adults and transplant recipients. Ther Adv Infect Dis 2022;9:20499361221091413. Crossref
    4. Branche AR, Saiman L, Walsh EE, et al. Incidence of respiratory syncytial virus infection among hospitalised adults, 2017-2020. Clin Infect Dis 2022;74:1004-11. Crossref
    5. Du Y, Yan R, Wu X, et al. Global burden and trends of respiratory syncytial virus infection across different age groups from 1990 to 2019: a systematic analysis of the Global Burden of Disease 2019 study. Int J Infect Dis 2023;135:70-6. Crossref
    6. Ambrosch A, Luber D, Klawonn F, Kabesch M. Focusing on severe infections with the respiratory syncytial virus (RSV) in adults: risk factors, symptomatology and clinical course compared to influenza A/B and the original SARS-CoV-2 strain. J Clin Virol 2023;161:105399. Crossref
    7. Ackerson B, Tseng HF, Sy LS, et al. Severe morbidity and mortality associated with respiratory syncytial virus versus influenza infection in hospitalised older adults. Clin Infect Dis 2019;69:197-203. Crossref
    8. Grace M, Colosia A, Wolowacz S, Panozzo C, Ghaswalla P. Economic burden of respiratory syncytial virus infection in adults: a systematic literature review. J Med Econ 2023;26:742-59. Crossref
    9. Coultas JA, Smyth R, Openshaw PJ. Respiratory syncytial virus (RSV): a scourge from infancy to old age. Thorax 2019;74:986-93. Crossref
    10. Branche AR, Saiman L, Walsh EE, et al. Change in functional status associated with respiratory syncytial virus infection in hospitalized older adults. Influenza Other Respir Viruses 2022;16:1151-60. Crossref
    11. Juhn YJ, Wi CI, Takahashi PY, et al. Incidence of respiratory syncytial virus infection in older adults before and during the COVID-19 pandemic. JAMA Netw Open 2023;6:e2250634. Crossref
    12. Begley KM, Monto AS, Lamerato LE, et al. Prevalence and clinical outcomes of respiratory syncytial virus vs influenza in adults hospitalised with acute respiratory illness from a prospective multicentre study. Clin Infect Dis 2023;76:1980-8. Crossref
    13. Kujawski SA, Whitaker M, Ritchey MD, et al. Rates of respiratory syncytial virus (RSV)-associated hospitalization among adults with congestive heart failure—United States, 2015-2017. PLoS One 2022;17:e0264890. Crossref
    14. Chan WS, Yau SK, To MY, et al. The seasonality of respiratory viruses in a Hong Kong Hospital, 2014–2023. Viruses 2023;15:1820. Crossref
    15. Eden JS, Sikazwe C, Xie R, et al. Off-season RSV epidemics in Australia after easing of COVID-19 restrictions. Nat Commun 2022;13:2884. Crossref
    16. Bardsley M, Morbey RA, Hughes HE, et al. Epidemiology of respiratory syncytial virus in children younger than 5 years in England during the COVID-19 pandemic, measured by laboratory, clinical, and syndromic surveillance: a retrospective observational study. Lancet Infect Dis 2023;23:56-66. Crossref
    17. Zheng Z, Warren JL, Artin I, Pitzer VE, Weinberger DM. Relative timing of respiratory syncytial virus epidemics in summer 2021 across the United States was similar to a typical winter season. Influenza Other Respir Viruses 2022;16:617-20. Crossref
    18. Talbot HK, Falsey AR. The diagnosis of viral respiratory disease in older adults. Clin Infect Dis 2010;50:747-51. Crossref
    19. Chartrand C, Tremblay N, Renaud C, Papenburg J. Diagnostic accuracy of rapid antigen detection tests for respiratory syncytial virus infection: systematic review and meta-analysis. J Clin Microbiol 2015;53:3738-49. Crossref
    20. Mazur NI, Higgins D, Nunes MC, et al. The respiratory syncytial virus vaccine landscape: lessons from the graveyard and promising candidates. Lancet Infect Dis 2018;18:e295-311.
    21. Melero JA, Mas V, McLellan JS. Structural, antigenic and immunogenic features of respiratory syncytial virus glycoproteins relevant for vaccine development. Vaccine 2017;35:461-8. Crossref
    22. Walsh EE, Pérez Marc G, Zareba AM, et al. Efficacy and safety of a bivalent RSV prefusion F vaccine in older adults. N Engl J Med 2023;388:1465-77. Crossref
    23. Falsey AR, Walsh EE, Scott DA, et al. Phase 1/2 randomised study of the immunogenicity, safety, and tolerability of a respiratory syncytial virus prefusion F vaccine in adults with concomitant inactivated influenza vaccine. J Infect Dis 2022;225:2056-66. Crossref
    24. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunisation Practices– United States, 2023. MMWR Morb Mortal Wkly Rep 2023;72:793-801. Crossref

    Informed consent: clarifying the post-Montgomery duty of care to discuss 'reasonable alternative treatment'

    Hong Kong Med J 2024 Apr;30(2):88–9 | Epub 28 Mar 2024
    © Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
     
    EDITORIAL
    Informed consent: clarifying the post-Montgomery duty of care to discuss 'reasonable alternative treatment'
    Gilberto KK Leung, FHKAM (Surgery), LLM
    Department of Surgery, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
     
    Corresponding author: Prof Gilberto KK Leung (gilberto@hku.hk)
     
     Full paper in PDF
     
     
    Many doctors have become concerned and unsure about the standard of care required of them in obtaining informed consent following the United Kingdom Supreme Court decision in Montgomery v Lanarkshire Health Board ('Montgomery').1 This article aims to provide an update on the relevant common law positions, clarified helpfully by the same court in McCulloch v Forth Valley Health Board ('McCulloch') in July 2023.2
     
    The case of Montgomery established that a doctor must 'take reasonable care to ensure that the patient is aware of any material risks involved in any recommended treatment, and of any reasonable alternative or variant treatments.' It rejected the previous paternalistic approach to medical consent and introduced a legal standard that emphasises respect for a patient’s right to self-determination. The decision also gave rise to uncertainties about the meaning of 'reasonable alternative treatment' and the role of professional clinical judgement in determining it.3
     
    Must a doctor discuss all possible treatment options with the patient, including those which the doctor considers to be inappropriate? Does it matter if the doctor’s decision not to discuss certain treatment options is, in fact, supported by expert witness opinion?
     
    In McCulloch, a 39-year-old man was hospitalised with chest pain and suspected pericarditis. Echocardiogram findings were inconclusive. A cardiologist who subsequently saw the patient decided not to prescribe non-steroidal anti-inflammatory drugs (NSAIDs) because the patient was by then pain-free, and she did not discuss that treatment option with the patient. The patient died of cardiac tamponade secondary to idiopathic pericarditis and pericardial effusion a few days later.
     
    The patient’s widow brought a claim, alleging that had the patient been informed of the option of NSAID, he would have taken it and would not have died. The cardiologist explained that she did not, in her professional judgement, regard NSAIDs as necessary or appropriate treatment when she assessed him; had he been in pain, she would have prescribed the medication. Expert witnesses agreed that NSAID could reduce pericardial effusion, but opinions were divided regarding its use in the absence of chest pain. The case eventually went to the Supreme Court, which found for the defendant cardiologist based on expert opinions in support of her practice, and took the opportunity to clarify that:
  • whether a treatment is a reasonable alternative is determined by applying the 'professional practice test', ie, whether the doctor has acted in accordance with a practice accepted as proper by a responsible body of medical opinion4;
  • a doctor is not negligent in failing to discuss a treatment option if the doctor’s opinion that the treatment is not reasonable is supported by a reasonable body of medical opinion;
  • the doctor is also not negligent in this regard even if the doctor is aware (or ought to be aware) that another reasonable body of opinion would consider that treatment option to be reasonable (and therefore warranting discussion with the patient);
  • once the doctor has applied the professional practice test and decided on a range of reasonable treatment options, the patient should be informed of all of those options; the doctor cannot simply discuss only the option(s) that the doctor prefers; and
  • the doctor must inform the patient of the respective advantages, disadvantages, and material risks associated with the treatment option(s) which the doctor considers reasonable.
  •  
    McCulloch thus affirmed the pre-eminent role of professional clinical judgement in determining the reasonable treatment options for each patient, as well as the principle that the role of the court is not to substitute clinical expertise but to impose a duty of care to inform. The decision is consistent with Montgomery in that patients remain entitled to be adequately advised, albeit not on all possible alternative treatments, but on all reasonable ones in accordance with reasonable and responsible medical practice. This narrowing-down approach has the merits of reducing the risk of doctors bombarding patients with information and reducing the risk of putting doctors in a position of conflict by requiring them to discuss treatments which they do not find clinically appropriate. It is a significant clarification of the laws which should bring some relief to our professional peers.
     
    The adoption of the 'professional practice test' means that a doctor can defend an omission to discuss certain treatment options only if his or her practice is supported by expert witness opinion (it will be recalled that the doctor’s omission to discuss the option of caesarean section in Montgomery was not supported by any reasonable body of medical opinion). Where expert opinions are divided, the court cannot prefer one opinion to another (and hence the ruling in McCulloch).4 However, the court may on rare occasions reject an opinion if it does not have a logical basis.5 The importance of quality expert witness opinion and proper training for expert witnesses cannot be overemphasised.
     
    Another caveat is the continued and resolute requirement for doctors to discuss the material risks of medical treatment, defined in Montgomery as 'risks to which a reasonable person in the patient’s position would be likely to attach significance, or risks to which the doctor is or should reasonably be aware that the particular patient would be likely to attach significance.' Factors pointing to materiality may include: the odds and nature of the risk, the effect of its occurrence on the life of the patient, the importance to the patient of the benefits sought through the treatment, and the alternatives available and the risks associated with those alternatives.1
     
    The broad definition of material risks can pose challenges to the doctor concerned as it necessitates an appreciation of the particular patient’s subjective values, beliefs, occupational needs, or even lifestyle and hobbies. It arguably opens up unforeseeable possibilities to support a claim, as suggested by a four-fold increase in consent-based claims in the United Kingdom during the post-Montgomery era.6 Doctors should therefore be mindful that obtaining informed consent is not a mere tick-box exercise, but a shared decision-making process involving personalised and bi-directional discussions.
     
    Lastly, it is important to mention that McCulloch and Montgomery, both post-1997 Supreme Court decisions, are persuasive or highly persuasive, but not binding, in Hong Kong. Although Montgomery had already been applied in a local dental case, it is unclear whether McCulloch will receive the same judicial response.7 Similarly, the Medical Council of Hong Kong has incorporated the principles espoused in Montgomery into its professional guidance on medical consent.8 Whether McCulloch will be so treated remains to be seen; there is little doubt that it be welcome.
     
    Author contributions
    The author is solely responsible for drafting of the manuscript, approved the final version for publication, and takes responsibility for its accuracy and integrity.
     
    Conflicts of interest
    The author has declared no conflict of interest.
     
    Funding/support
    This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
     
    References
    1. Montgomery v Lanarkshire Health Board [2015] UKSC 11
    2. McCulloch v Forth Valley Health Board [2023] UKSC 26
    3. Devaney S, Purshouse C, Cave E, Heywood R, Miola J, Reinach N. The far-reaching implications of Montgomery for risk disclosure in practice. J Patient Saf Risk Manag 2019;24:25-9. Crossref
    4. Bolam v Friern Hospital Management Committee (1957) 1 WLR 582
    5. Bolitho v City and Hackney Health Authority [1998] AC 232
    6. Wald DS, Bestwick JP, Kelly P. The effect of the Montgomery judgment on settled claims against the National Health Service due to failure to inform before giving consent to treatment. QJM 2020;113:721-5. Crossref
    7. Chan Siu Yim v Dr Cheung Sheung Kin [2017] DCPI 2358/2013
    8. The Medical Council of Hong Kong. Newsletter: Implications of “Montgomery (Appellant) v Lanarkshire Health Board (Respondent)(Scotland)”. 2015;22. Available from: https://www.mchk.org.hk/files/newsletter22.pdf. Accessed 8 Mar 2024.

    Call to action: bridging gaps in lipid management in Hong Kong

    Hong Kong Med J 2024 Apr;30(2):90–3 | Epub 10 Apr 2024
    © Hong Kong Academy of Medicine. CC BY-NC-ND 4.0
     
    EDITORIAL
    Call to action: bridging gaps in lipid management in Hong Kong
    Bryan PY Yan, MD, FRCP1; Kui Kai Lau, DPhil, FRCP2; Andrea OY Luk, MD, FRCP3; Martin CS Wong, MD, MPH4,5
    1 Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
    2 Division of Neurology, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
    3 Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
    4 The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
    5 Editor-in-Chief, Hong Kong Medical Journal
     
    Corresponding author: Dr Bryan PY Yan (bryan.yan@cuhk.edu.hk)
     
     Full paper in PDF
     
     
    Atherosclerotic cardiovascular disease in Hong Kong
    Cardiovascular disease is the third leading cause of death in Hong Kong, contributing to 13% of all deaths in 2020.1 According to the Hong Kong Population Health Survey conducted between 2020 and 2022, the prevalence of high blood cholesterol among individuals aged 15 to 84 years in the Hong Kong general population increased from 8.4% in 2003/20042 to 51.9% in 2022.3 Low-density lipoprotein cholesterol (LDL-C) has been recognised as one of the most important modifiable risk factors for atherosclerotic cardiovascular disease (ASCVD).4 Accordingly, optimal LDL-C management is essential for reducing the incidence of and mortality from ASCVD. Despite the availability of effective and safe lipid-lowering therapies (LLTs) and guidelines for managing elevated LDL-C and other lipids, implementation remains a key challenge in clinical practice.
     
    Advancements in lipid-lowering therapies
    A lower LDL-C level is highly beneficial because of the direct correlation between the absolute reduction in LDL-C level and reduced cardiovascular risk, such that an incremental reduction in LDL-C level leads to a proportional reduction in the number of cardiovascular events.5 Statins are well-established as effective LLTs; this recognition has been extended to other non-statin therapies, including proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9is), ezetimibe, bempedoic acid, evinacumab, and inclisiran.6 7 Clinical trials have demonstrated that PCSK9is effectively lower LDL-C levels, thereby surpassing previous recommendations (high risk: <2.6 mmol/dL; very high risk: <1.8 mmol/dL) to offer additional cardiovascular benefits to patients (particularly those with high or very high ASCVD risk) who failed to meet their target LDL-C goal despite maximally tolerated high-intensity statin therapy.6 8
     
    Adapting the latest evidence into current guidelines
    The European Society of Cardiology and European Atherosclerosis Society (ESC/EAS) revised their guidelines in 2019 to integrate recent evidence concerning ASCVD prevention.5 These updates include a more aggressive approach with new LDL-C targets across all cardiovascular risk categories, as well as recommendations for lipid-lowering strategies. Since these updates, other cardiology societies (Table)1 5 10 11 and medical associations12 13 have also begun to recommend achieving the lowest possible LDL-C levels, especially for patients with very high ASCVD risk.
     

    Table. Target LDL-C goals established by various regional guidelines
     
    The 2019 ESC/EAS guidelines recommend the following LDL-C targets for the prevention of ASCVD in very high- and high-risk patients: <1.4 mmol/L and <1.8 mmol/L (and 50% reduction from baseline), respectively.5 Consistent with these recommendations, the 2024 American Diabetes Association guidelines recommend that patients with diabetes aged 40 to 70 years receive moderate-intensity statins, and such patients with one or more ASCVD risk factors receive high-intensity statins, to achieve LDL-C level <1.8 mmol/L and ≥50% reduction from baseline.12 Statin therapy should also be considered for young adults aged 20 to 39 years, depending on their existing risk factors.12 The American Heart Association/American Stroke Association guidelines recommend a target LDL-C level of <1.8 mmol/L for patients who have experienced transient ischaemic attack/ischaemic stroke with atherosclerotic disease.13
     
    If there is inadequate LDL-C reduction with maximally tolerated statins, the addition of non-statin options (eg, PCSK9is or ezetimibe) can be considered according to the extent of reduction required to reach the LDL-C goal.5 7 9 10 11 12 13
     
    Low-density lipoprotein cholesterol target achievement remains challenging in Hong Kong
    Low-density lipoprotein cholesterol management in Hong Kong has gradually improved, but considerable gaps in care persist. A territory-wide study conducted between 2016 and 2021 revealed poor achievement of LDL-C target goals among patients hospitalised for acute coronary syndrome.14 The study showed low rates of prescription for high-intensity statins (53%) and combination LLTs (1.3%-3.8%) at discharge; LLT and statin treatments were rarely intensified after discharge.14 Notably, approximately 22% of patients did not undergo follow-up lipid profile assessment after discharge.14 This lack of follow-up has been identified as an independent risk factor for all-cause death and cardiovascular-related death.14
     
    A separate study involving over 700 000 patients revealed gross underutilisation of statins among patients with diabetes in Hong Kong, such that most of this population failed to meet LDL-C targets.15 Importantly, women and younger individuals were particularly undertreated, highlighting the need to address these age and sex disparities in lipid management.15 Consistent with current evidence,5 a large cohort of local patients with ischaemic stroke (with or without significant large artery atherosclerosis) demonstrated that the achievement of a target LDL level <1.8 mmol/L was associated with a reduced risk of subsequent major adverse cardiovascular events.16
     
    Outdated recommendations in local settings can hinder optimal lipid management. As a result, physicians may fail to initiate appropriate LLT, prioritise regular monitoring, or provide appropriate follow-up care to assess treatment efficacy. Patients may not recognise the dangers of elevated LDL-C levels or understand the importance of lifestyle modification and medication adherence, leading to suboptimal outcomes.
     
    Call to action: bridging gaps in lipid management
    The International Atherosclerosis Society issued a call to action for improvements in lipid management, based on a multinational survey that involved 1758 physicians comprising cardiologists, endocrinologists, neurologists/stroke specialists, nephrologists, and general medicine practitioners from Japan, Germany, Colombia and the Philippines; the survey was designed to identify knowledge gaps in clinical practice.17 The results highlighted three major gaps in beliefs and behaviour across the four countries: (1) physicians lacked clear guidance concerning the management of higher-risk patients who may benefit from aggressive LLT; (2) although most physicians believed that they followed guideline recommendations, only half knew the LDL-C target for high-risk patients, and more than one-third had no opinion concerning the safety of low LDL-C levels; and (3) physicians were unsure of the potential effects of statins on cognitive, renal, and hepatic functions, as well as the increased risk of haemorrhagic stroke associated with low LDL-C levels.17 Taken together, these findings highlighted key areas for enhanced education and research efforts to bridge gaps in lipid management.17 Physicians’ limited familiarity with the rapidly changing guidelines hinders optimal LDL-C management.
     
    The Hong Kong Cardiovascular Task Force published a consensus statement regarding ASCVD prevention in 2016, based on the 2011 ESC/EAS guidelines and the 2013 American Heart Association/American College of Cardiology guidelines.18 Although the consensus is valuable, it primarily constitutes expert opinion and lacks endorsement from any medical societies. Additionally, although various international societies have established guidelines for optimal lipid management, differences among these recommendations (eg, pharmacological treatment, lifestyle modification, and therapeutic targets) may lead to confusion and uncertainty among primary care physicians regarding the best approach.19
     
    Efforts to bridge current gaps in lipid management in Hong Kong will require identifying local therapeutic limitations and barriers to optimising lipid management among physicians and patients. Based on knowledge of these issues, a consensus among local experts (ie, cardiologists, endocrinologists, neurologists, nephrologists, internists, general practitioners, nutritionists, and other healthcare specialists) can be achieved to provide practical recommendations that are consistent with international guidelines and adapted to local clinical practice.11 Considering the complexities and time involved in developing local guidelines, a practical course of action would involve local medical societies across various specialties collaborating to issue a joint statement that recommends the adoption of appropriate guidelines, thereby ensuring a more cohesive and unified approach to lipid management in Hong Kong.
     
    Local recommendations should also address pertinent issues, such as greater adherence to established guidelines—specifically, by encouraging the prompt initiation and intensification of statin therapy in eligible patients. Because the overall ASCVD risk assessment is the basis for treatment decisions in patients with dyslipidaemia,5 7 9 appropriate tools—adapted to the local population—should be used in routine clinical practice to ensure that patients are adequately assessed and managed. Additionally, the benefits of long-term adherence to LLT should be consistently and effectively communicated to patients.
     
    Author contributions
    All authors contributed to the development of the manuscript, approved the final version for publication, and take full responsibility for its accuracy and integrity.
     
    Conflicts of interest
    KK Lau has received grants from the Croucher Foundation, Research Fund Secretariat of the Food and Health Bureau, Innovation and Technology Bureau, Research Grants Council, Amgen, Boehringer Ingelheim, Eisai, and Pfizer, as well as consultation fees from Amgen, Boehringer Ingelheim, Daiichi Sankyo, and Sanofi, all unrelated to the submitted work. AOY Luk has served as a member of advisory panels for Amgen, AstraZeneca, Boehringer Ingelheim, and Sanofi and has received research support from Amgen, Asia Diabetes Foundation, Bayer, Biogen, Boehringer Ingelheim, Lee’s Pharmaceutical, MSD, Novo Nordisk, Roche, Sanofi, Sugardown Ltd., and Takeda, unrelated to the submitted work. As editors of the journal, BPY Yan, KK Lau and MCS Wong were not involved in the peer review process.
     
    Acknowledgement
    Medical writing support was provided by Veronica Yap and Analyn Lizaso of Weber Shandwick Health HK.
     
    Funding/support
    This editorial received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
     
    References
    1. Centre for Health Protection, Department of Health, Hong Kong SAR Government. Heart diseases. Available from: https://www.chp.gov.hk/en/healthtopics/content/25/57.html. Accessed 23 Jan 2024.
    2. Centre for Health Protection, Department of Health, Hong Kong SAR Government and Department of Community Medicine, University of Hong Kong. Population Health Survey 2003/2004. Available from: https://www.chp.gov.hk/files/pdf/report_on_population_health_survey_2003_2004_en.pdf. Accessed 23 Jan 2024.
    3. Non-Communicable Disease Branch, Centre for Health Protection, Department of Health, Hong Kong SAR Government. Population Health Survey 2020-22 (Part II). Published April 2023. Available from: https://www.chp.gov.hk/files/pdf/dh_phs_2020-22_part_2_report_eng_rectified.pdf. Accessed 23 Jan 2024.
    4. Borén J, Chapman MJ, Krauss RM, et al. Low-density lipoproteins cause atherosclerotic cardiovascular disease: pathophysiological, genetic, and therapeutic insights: a consensus statement from the European Atherosclerosis Society Consensus Panel. Eur Heart J 2020;41:2313-30. Crossref
    5. Mach F, Baigent C, Catapano AL, et al. 2019 ESC/EAS Guidelines for the management of dyslipidaemias: lipid modification to reduce cardiovascular risk. Eur Heart J 2020;41:111-88. Crossref
    6. Furtado RH, Giugliano RP. What lessons have we learned and what remains to be clarified for PCSK9 inhibitors? A review of FOURIER and ODYSSEY outcomes trials. Cardiol Ther 2020;9:59-73. Crossref
    7. Lloyd-Jones DM, Morris PB, Ballantyne CM, et al. 2022 ACC Expert consensus decision pathway on the role of nonstatin therapies for LDL-cholesterol lowering in the management of atherosclerotic cardiovascular disease risk: a report of the American College of Cardiology Solution Set Oversight Committee. J Am Coll Cardiol 2022;80:1366-418. Crossref
    8. Catapano AL, Graham I, De Backer G, et al. 2016 ESC/EAS Guidelines for the management of dyslipidaemias. Eur Heart J 2016;37:2999-3058. Crossref
    9. Koh N, Ference BA, Nicholls SJ, et al. Asian Pacific Society of Cardiology consensus recommendations on dyslipidaemia. Eur Cardiol 2021;16:e54. Crossref
    10. Li JJ, Zhao SP, Zhao D, et al. 2023 Chinese guideline for lipid management. Front Pharmacol 2023;14:1190934. Crossref
    11. Grundy SM, Stone NJ, Bailey AL, et al. 2018 AHA/ACC/AACVPR/AAPA/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA guideline on the management of blood cholesterol: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol 2019;73:e285-350. Crossref
    12. American Diabetes Association Professional Practice Committee. 10. Cardiovascular disease and risk management: standards of care in diabetes—2024. Diabetes Care 2024;47(Suppl 1):S179-218. Crossref
    13. Kleindorfer DO, Towfighi A, Chaturvedi S, et al. 2021 Guideline for the prevention of stroke in patients with stroke and transient ischemic attack: a guideline from the American Heart Association/American Stroke Association. Stroke 2021;52:e364-467. Crossref
    14. Sun H, Lai A, Tan GM, Yan B. Therapeutic gaps in low-density lipoprotein cholesterol management have narrowed over time but remain wide: a Hong Kong–wide study of 40,141 acute coronary syndrome patients from 2016 to 2021. Presented at the European Society of Cardiology Congress 2023; 2023 Aug 25-28; Amsterdam: Netherlands. Crossref
    15. Wu H, Lau ES, Yang A, et al. Trends in diabetes-related complications in Hong Kong, 2001-2016: a retrospective cohort study. Cardiovasc Diabetol 2020;19:60. Crossref
    16. Lau KK, Chua BJ, Ng A, et al. Low-density lipoprotein cholesterol and risk of recurrent vascular events in Chinese patients with ischemic stroke with and without significant atherosclerosis. J Am Heart Assoc. 2021;10:e021855. Crossref
    17. Barter PJ, Yamashita S, Laufs U, et al. Gaps in beliefs and practice in dyslipidaemia management in Japan, Germany, Colombia and the Philippines: insights from a web-based physician survey. Lipids Health Dis 2020;19:131. Crossref
    18. Cheung BM, Cheng CH, Lau CP, et al. 2016 consensus statement on prevention of atherosclerotic cardiovascular disease in the Hong Kong population. Hong Kong Med J 2017;23:191-201. Crossref
    19. Singh M, McEvoy JW, Khan SU, et al. Comparison of transatlantic approaches to lipid management: the AHA/ACC/Multisociety Guidelines vs the ESC/EAS Guidelines. Mayo Clin Proc 2020;95:998-1014. Crossref

    Pages