Small bowel enema use in an Asian population: our eleven years of local experience

ABSTRACT

Hong Kong Med J 2011;17:286–91 | Number 4, August 2011
ORIGINAL ARTICLE
Small bowel enema use in an Asian population: our eleven years of local experience
WH Luk, Peter SM Yu, Andrea WS Au-Yeung, Adrian XN Lo, Lily KM Wong
Department of Diagnostic Radiology and Organ Imaging, United Christian Hospital, Kwun Tong, Hong Kong
 
 
OBJECTIVE. To retrospectively analyse the outcome of patients who underwent investigation by small bowel enema in a local centre.
 
DESIGN. Case series.
 
SETTING. Regional hospital, Hong Kong.
 
PATIENTS. All patients referred for small bowel enema in a local hospital from 1 January 1999 to 31 December 2009 were identified; respective findings from imaging and clinical records were reviewed.
 
RESULTS. A total of 341 patients were referred for small bowel enema, of whom 289 successfully completed the examination. There were 211 patients whose small bowel enema findings were considered normal and 78 were regarded as abnormal. The sensitivity of this investigation was 73% and its specificity was 91%. The respective positive and negative predictive values were 66% and 93%.
 
CONCLUSIONS. The selection of patients by clinicians with specific indications for small bowel enema is essential for making effective use of small bowel enema as an investigative tool.
 
Key words: Enema; Intestinal obstruction; Intestine, small; Sensitivity and specificity
 
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Immunoglobulin G4-related sclerosing disease: experience with this novel entity in a local hospital

ABSTRACT

Hong Kong Med J 2011;17:280–5 | Number 4, August 2011
ORIGINAL ARTICLE
Immunoglobulin G4-related sclerosing disease: experience with this novel entity in a local hospital
TL Ng, IS Leong, WL Tang, KF Chan, YW Luk, WC Lao, CM Leung, SY Liu, CS Kho, KL Lee, KK Chan, Michael KW Li
Department of Medicine, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong
 
 
OBJECTIVE. To review the site of involvement, clinical presentation, and treatment outcome of patients having immunoglobulin G4-related sclerosing disease in a local regional hospital.
 
DESIGN. Retrospective case series.
 
SETTING. Pamela Youde Nethersole Eastern Hospital, Hong Kong.
 
PATIENTS. All patients with a diagnosis of immunoglobulin G4-related sclerosing disease in the hospital diagnosed in the period from April 2008 to March 2010.
 
RESULTS. A total of 12 patients with involvement of various organs were identified. There was a male predominance (male-to-female ratio=5:1). The mean age at diagnosis was 65 years. The salivary glands, biliary tract, pancreas, and cervical lymph nodes were the commonest involved sites. The immunoglobulin G4 level was elevated in 83% of the patients. Patients usually appeared to respond well to steroid treatment.
 
CONCLUSION. Immunoglobulin G4-related sclerosing disease is a systemic disease and can involve various systems.
 
Key words: Autoimmune diseases; Immunoglobulin G; Lymph nodes; Pancreatitis, chronic; Sclerosis
 
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Using bevacizumab in the fight against malignant glioma: first results in Asian patients

ABSTRACT

Hong Kong Med J 2011;17:274–9 | Number 4, August 2011
ORIGINAL ARTICLE
Using bevacizumab in the fight against malignant glioma: first results in Asian patients
Jenny KS Pu, Raymond TT Chan, Gloria KB Ng, Gilberto KK Leung, KN Hung, CF Fung
Department of Surgery, Li Ka Shing Faculty of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong
 
 
OBJECTIVES. To investigate the efficacy and safety profile of bevacizumab in combination with irinotecan in Hong Kong Chinese patients with recurrent malignant glioma and to determine whether their response differed from that reported in other populations.
 
DESIGN. Retrospective study.
 
SETTING. Two private clinics and a public hospital in Hong Kong.
 
PATIENTS. Fourteen individuals who presented with recurrent glioma presenting to the hospital between November 2005 and November 2009.
 
INTERVENTION. Salvage therapy with bevacizumab (10 mg/kg) and irinotecan (125 mg/m(2) [340 mg/m(2) for those taking enzyme-inducing antiepileptic drugs]) on a 14-day schedule.
 
RESULTS. A radiological response was observed in 12 (86%) of the patients, four (33%) of whom had a complete response. The median progression-free survival was 6 (range, 1-15) months; 71% remained progression-free at 6 months. The median overall survival was 18 (range, 9-61) months. The most common adverse events during the bevacizumab and irinotecan treatment period were haematological; five patients had grade 2/3 adverse events. Pulmonary embolism occurred in two patients, one of whom died. Intracranial haemorrhage was not detected in any of the 14 treated patients.
 
CONCLUSIONS. Bevacizumab plus irinotecan was at least as effective at treating Chinese patients with recurrent glioma as previously reported in clinical trials in different patient populations.
 
Key words: Antineoplastic combined chemotherapy protocols; Brain neoplasms; Glioblastoma; Neoplasm recurrence, local; Treatment outcome
 
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Urinary symptoms and impaired quality of life in female ketamine users: persistence after cessation of use

ABSTRACT

Hong Kong Med J 2011;17:267–63 | Number 4, August 2011
ORIGINAL ARTICLE
Urinary symptoms and impaired quality of life in female ketamine users: persistence after cessation of use
Rachel YK Cheung, Symphorosa SC Chan, Jacqueline HS Lee, Albe WL Pang, KW Choy, Tony KH Chung
Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
 
 
OBJECTIVE. To compare the urinary symptoms and quality of life in ex-ketamine abusers and controls.
 
DESIGN. Prospective observational study.
 
SETTING. A hospital in Hong Kong.
 
PATIENTS. Female ex-ketamine abusers admitted to a local drug rehabilitation centre and age-matched controls attending a general gynaecology clinic between December 2009 and April 2010.
 
MAIN OUTCOME MEASURES. Evaluation of urinary symptoms based on a 3-day bladder diary, and responses to the Urogenital Distress Inventory Short Form (UDI-6) and the Incontinence Impact Questionnaire Short Form (IIQ-7). The study group had repeat measurements 3 months later.
 
RESULTS. Overall, 90% of ex-ketamine abusers had active urinary symptoms. On average, they had increased 24-hour urinary frequency (10.0 vs 5.8; P=0.001) and lower maximum voided volume (253.3 mL vs 401.9 mL; P<0.001) compared to controls. Correspondingly, the median functional bladder capacity was smaller (195.3 mL vs 261.2 mL; P=0.011) and the mean UDI-6 and IIQ-7 scores were higher (P<0.001). Among those who abused ketamine for 2 years or more, the mean UDI-6 and IIQ-7 scores were higher (P=0.03, P=0.02 respectively). When they stopped abusing ketamine for 3 months or more, their mean 24-hour urinary frequency had decreased (P=0.03), the maximum voided volume had increased (P=0.03) and the mean UDI-6 and IIQ-7 scores had decreased (P=0.04, P=0.02 respectively), although they were still higher than in controls. After 3 more months, in the ex-ketamine abusers there had been a further decrease in 24-hour urinary frequency (P=0.01) and a further improvement in quality of life based on mean UDI-6 scores (P=0.04) but nevertheless poorer than the control group (P<0.01).
 
CONCLUSION. Female ex-ketamine abusers had significant urinary symptoms affecting their quality of life when studied at a mean of 8 (range, 0.5-48) months after cessation of use. The symptom severity was inversely correlated with the duration of cessation; though they improved with time, some still persisted.
 
Key words: Female urogenital diseases; Ketamine; Quality of life; Substance-related disorders; Urinary incontinence
 
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A synopsis of current care of thalassaemia major patients in Hong Kong

ABSTRACT

Hong Kong Med J 2011;17:261–6 | Number 4, August 2011
ORIGINAL ARTICLE
A synopsis of current care of thalassaemia major patients in Hong Kong
WY Au, Vincent Lee, CW Lau, Jeffrey Yau, Desmond Chan, Eric YT Chan, Winnie WW Cheung, SY Ha, Bonnie Kho, CY Lee, Rever CH Li, CK Li, SY Lin, Alvin SC Ling, Vivien Mak, Lina Sun, Kris HF Wong, Raymond Wong, HL Yuen
Department of Medicine, Queen Mary Hospital, Hong Kong
 
 
OBJECTIVE. To provide a synopsis of current thalassaemia major patient care in Hong Kong.
 
DESIGN. Retrospective study.
 
SETTING. All haematology units of the Hospital Authority in Hong Kong.
 
PATIENTS. All patients with thalassaemia major with regular transfusion.
 
RESULTS. To date, there were 363 thalassaemia major patients under the care of the Hospital Authority. Prenatal diagnosis has helped to reduce the number of indigenous new cases, but in recent years immigrant cases are appearing. The patients have a mean age of 23 (range, 1-52) years, and 78% of them are adults. In 2009, they received 18 782 units of blood. This accounted for 9.5% of all blood consumption from the Hong Kong Red Cross. In the past, cardiac iron overload was the major cause of death (65%) and few patients survived beyond the age of 45 years. The availability of cardiac iron assessment by magnetic resonance imaging (T2* MRI) to direct the use of oral deferiprone chelation has reduced the prevalence of heart failure and cardiac haemosiderosis, which should reduce mortality and improve life expectancy.
 
CONCLUSION. The future for thalassaemia care in Hong Kong is bright. With better transfusion and chelation, it should be possible to avoid growth and endocrine deficiencies in younger patients.
 
Key words: beta-Thalassemia; Blood transfusion; Chelation therapy; Hemosiderosis; Iron chelating agents
 
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The development of a Health Call Centre in Hong Kong: a study on the perceived needs of patients

ABSTRACT

Hong Kong Med J 2011;17:208–16 | Number 3, June 2011
ORIGINAL ARTICLE
The development of a Health Call Centre in Hong Kong: a study on the perceived needs of patients
Frank WK Chan, Fiona YY Wong, H Fung, EK Yeoh
Division of Health System, Policy and Management, School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong
 
 
OBJECTIVES. To assess the preference for the development of a Health Call Centre and the perceived needs of patients in Hong Kong.
 
DESIGN. Cross-sectional, questionnaire-based survey.
 
SETTING. Two general out-patient clinics from health facilities in a geographical region in Hong Kong.
 
PARTICIPANTS. Patients aged 18 years or above were recruited for the study, which was conducted between January and March 2009.
 
MAIN OUTCOME MEASURES. Patients’ perspectives of a Health Call Centre, perceived needs for services, perceived health status, and socio-demographic status.
 
RESULTS. A total of 403 participants completed the questionnaire with a response rate of 78%. A total of 342 (85%) supported the development of a Health Call Centre. Providing basic health and chronic disease information, current health conditions and treatment information, and caregiver support advice were cited as the top perceived needs on the development of a Health Call Centre. Adjusting for age, education, and individual monthly income, participants aged 31 to 64 years (odds ratio=4.37; 95% confidence interval, 1.92-9.99; P<0.001) and caregivers (odds ratio=3.41; 95% confidence interval, 1.21-9.59; P=0.020) were more likely to use the Health Call Centre. Presence of chronic illness had no significant correlation with the use of a Health Call Centre (odds ratio=1.43; 95% confidence interval, 0.69-3.00; P=0.340).
 
CONCLUSIONS. This is the first study to assess the preferences for the development of a Health Call Centre and the perceived needs of patients in Hong Kong. The majority supported the development of a Health Call Centre. Services provided could meet the general need.
 
Key words: Health services accessibility; Practice management
 
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Learning needs in a medical curriculum in Hong Kong

ABSTRACT

Hong Kong Med J 2011;17:202–7 | Number 3, June 2011
ORIGINAL ARTICLE
Learning needs in a medical curriculum in Hong Kong
LK Chan, Mary SM Ip, NG Patil, M Prosser
Institute of Medical and Health Sciences Education; Department of Anatomy, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong
 
 
OBJECTIVE. To survey medical graduates from the University of Hong Kong on how well they perceived their learning needs had been fulfilled by the old (before 1997) and the new (after 1997) curricula.
 
DESIGN. Retrospective questionnaire survey.
 
SETTING. The University of Hong Kong, Hong Kong.
 
PARTICIPANTS. Medical graduates from the University of Hong Kong who graduated between 1997 and 2006 were invited to complete a questionnaire online or in paper form; 1997-2001 graduates were trained under the old curriculum, and 2002-2006 graduates under the new curriculum.
 
RESULTS. The response rate was 23%. The survey showed that the graduates of both curricula felt that research skills, population health, and ophthalmology were not emphasised enough in the medical programme. In addition, some graduates of the old curriculum mentioned interpersonal skills, ethics and professionalism, and language skills, which were pinpointed in the curriculum reform in 1997. Some graduates of the new curriculum mentioned anatomy, microbiology, and diagnostic radiology. Graduates of both the old and the new curricula perceived the same top five areas as being lacking in their respective curricula, in relationship to their clinical career and personal growth, namely: business administration, law, professional English, life coaching, and humanities. A small percentage of graduates also took courses in these areas after graduation.
 
CONCLUSIONS. The survey showed that the curriculum reform in 1997 at the University of Hong Kong had correctly pinpointed some of the learning needs. The survey also identified educational needs in the existing curriculum that need to be dealt with in the forthcoming curriculum reform in 2012.
 
Key words: Curriculum; Education, medical, undergraduate; Teaching/methods
 
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Risk of development of diabetes mellitus in Chinese women with persistently impaired glucose tolerance after gestational diabetes

ABSTRACT

Hong Kong Med J 2011;17:195–201 | Number 3, June 2011
ORIGINAL ARTICLE
Risk of development of diabetes mellitus in Chinese women with persistently impaired glucose tolerance after gestational diabetes
KF Lee, Maria WH Mak, KO Lau, Harriet HY Chung
Department of Medicine and Geriatrics, Kwong Wah Hospital, 25 Waterloo Road, Hong Kong
 
 
OBJECTIVES. To estimate the cumulative incidence for the development of diabetes mellitus in Chinese women with persistently impaired glucose tolerance after gestational diabetes, and evaluate putative risk factors.
 
DESIGN. Historical cohort study.
 
SETTING. A regional hospital in Hong Kong.
 
PATIENTS. Women with postpartum impaired glucose tolerance (as confirmed by a 75-gram oral glucose tolerance test 6 weeks after delivery) seen between January 2000 and December 2006.
 
RESULTS. After a mean follow-up period of 52 (standard deviation, 22; range, 12-106) months, 47 (20%) of the 238 women converted to diabetes mellitus. Concomitant postpartum impaired fasting plasma glucose levels increased the risk of future diabetes mellitus by 3.5-fold (95% confidence interval, 1.7-7.0; P=0.001) when compared to those with postpartum impaired glucose tolerance only. Based on multivariate analysis, only antepartum and postpartum fasting plasma glucose levels predicted future development of diabetes mellitus. At 1 year after delivery in 95/159 (60%) of the women, glucose tolerance regressed to normal, while in only 9/159 (6%) it progressed to diabetes mellitus. At this stage, 29% of those with impaired glucose regulation (impaired glucose tolerance, impaired fasting glucose or both) compared to 2% of those whose glucose tolerance reverted to normal developed diabetes mellitus upon subsequent followup (P<0.001). In all, 24/159 (15%) fulfilled the definition of metabolic syndrome and its presence was associated with 4.7- fold increased risk of future diabetes mellitus (95% confidence interval, 1.7-13.4; P=0.004).
 
CONCLUSIONS. Women with persistent postpartum impaired glucose tolerance after gestational diabetes have a high risk of developing diabetes mellitus. However, a significant proportion of these women regress to normal glucose tolerance 1 year after delivery, and their risk of progression to diabetes mellitus is lower than those with persistent impaired glucose regulation. Therefore, women with a history of gestational diabetes, particularly those with persistent glucose intolerance 6 weeks and 1 year after delivery, should have regular surveillance for the development of diabetes mellitus.
 
Key words: Diabetes, gestational; Glucose intolerance; Metabolic syndrome; Pregnancy in diabetics; Prevalence
 
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A synopsis of current haemophilia care in Hong Kong

ABSTRACT

Hong Kong Med J 2011;17:189–94 | Number 3, June 2011
ORIGINAL ARTICLE
A synopsis of current haemophilia care in Hong Kong
WY Au, Vincent Lee, Bonnie Kho, Alvin SC Ling, Desmond Chan, Eric YT Chan, Godfrey CF Chan, Winnie WW Cheung, CW Lau, CY Lee, Rever CH Li, CK Li, SY Lin, Vivien Mak, Lina Sun, Kris HF Wong, Raymond Wong, Jeffrey Yau, HL Yuen
Department of Medicine, Queen Mary Hospital, Hong Kong
 
 
OBJECTIVE. To provide a synopsis of current haemophilia care in Hong Kong.
 
DESIGN. Retrospective survey.
 
SETTING. All haematology units of the Hospital Authority in Hong Kong.
 
PATIENTS. All patients with haemophilia A and haemophilia B.
 
RESULTS. To date, there were 222 mild-to-severe haemophilia patients (192 type A, 30 type B) under regular public care in Hong Kong (43% were considered severe, 33% moderate, and 24% mild), which gave a crude prevalence of 6.8/100 000 male inhabitants. A total of 12.8 million units of Factor VIII and 3 million units of Factor IX were prescribed annually. This amounts to 1.83 units of FVIII per capita of the population, which is comparable to that of other developed countries. Leading causes of mortality were human immunodeficiency virus–related complications (10 cases) and cerebral bleeding (2 cases). The life expectancy of patients with severe haemophilia in Hong Kong is improving; currently the oldest patient is 60 years old. Such improved survival may be due to enhanced factor availability, prompt treatment of bleeding episodes at home, safer factor products, and better antiviral treatment. Primary prophylaxis is the accepted standard of care for severe and moderate cases, and "Factor First" has become hospital policy. However, 12 patients continue to present treatment challenges, due to the documented presence of factor inhibitors. In all, 28, 100, and 14 cases respectively were positive for human immunodeficiency virus, hepatitis C virus, and hepatitis B virus; the youngest patients with the corresponding infections being 28, 13, and 22 years old. Comprehensive care with dedicated physiotherapy, surgical support, and radionucleotide synovectomy may reduce morbidity further.
 
CONCLUSION. A multidisciplinary approach can further improve the future care for haemophilia patients in Hong Kong.
 
Key words: Factor VIII; Hemophilia A; HIV infections; Mutation; Survival rate
 
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Association of molecular marker O6Methylguanine DNA methyltransferase and concomitant chemoradiotherapy with survival in Southern Chinese glioblastoma patients

ABSTRACT

Hong Kong Med J 2011;17:184–8 | Number 3, June 2011
ORIGINAL ARTICLE
Association of molecular marker O6Methylguanine DNA methyltransferase and concomitant chemoradiotherapy with survival in Southern Chinese glioblastoma patients
Danny TM Chan, Michael KM Kam, Brigette BY Ma, Stephanie CP Ng, Jesse CS Pang, Claire KY Lau, Deyond YW Siu, Benedict SL Ng, XL Zhu, George G Chen, HK Ng, WS Poon
Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
 
 
OBJECTIVES. (1) To compare the survival of concomitant chemotherapy and radiotherapy with radiotherapy alone in Chinese patients with primary glioblastoma. (2) To determine the methylation status of O6Methylguanine DNA methyltransferase in Chinese primary glioblastoma, and to assess the prognostic value of O6Methylguanine DNA methyltransferase methylation status in such patients.
 
DESIGN. Retrospective correlative analysis.
 
SETTING. University teaching hospital, Hong Kong.
 
PATIENTS. Patients diagnosed with histologically proven primary glioblastoma in the period of March 2005 to June 2007 were recruited. Genomic DNA was isolated from formalin-fixed and paraffin-embedded sections of glioblastoma tissues. Methylationspecific polymerase chain reaction for O6Methylguanine DNA methyltransferase was performed. Patients’ information at presentation was collected (age, performance status, steroid use, extent of resection, complications, radiotherapy data, use of chemotherapy). Primary outcome was measured by overall survival while secondary outcome was measured by progression-free survival. Overall and progression-free survivals were estimated by the Kaplan-Meier technique. Outcomes were assessed for groups with and without concomitant chemoradiotherapy and for groups with and without O6Methylguanine DNA methyltransferase methylation.
 
RESULTS. A total of 35 glioblastoma patients were recruited; 27 were male and 8 female. Their mean age was 50 years. In all, 17 received concomitant chemoradiotherapy, and 18 received radiotherapy only. Their median overall survival was 12 (range, 7-17) months and the median progression-free survival was 5 (range, 3-6) months. In the radiotherapy alone group, the median progression-free survival and overall survival was 4 (range, 3-5) months and 6 (range, 2-10) months, respectively. In the concomitant radiochemotherapy group, the median progression-free survival and overall survival was 6 (range, 2-10) months and 13 (range, 8-18) months, respectively. Fifteen (43%) of the tumour samples showed methylation of O6Methylguanine DNA methyltransferase. There was a trend towards overall longer survival in the group with methylated tumours compared to those with unmethylated tumours; respective values for median survival (ranges) were 17 (13-21) versus 10 (6-14) months (P=0.105).
 
CONCLUSIONS. Our single-centre results indicated that Chinese glioblastoma patients who had received concomitant chemoradiotherapy showed a trend towards longer overall survival compared to those receiving radiotherapy alone. Approximately 43% of our Chinese glioblastoma samples showed methylation of O6Methylguanine DNA methyltransferase. O6Methylguanine DNA methyltransferase methylation may be a significant prognostic factor in Chinese glioblastoma patients.
 
Key words: Chemotherapy, adjuvant; DNA methylation; Disease-free survival; Glioblastoma; O6-methylguanine-DNA methyltransferase
 
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