J.R. Ismail

Prevalence of atrial fibrillation in the Malaysian communities

Background and aim Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia encountered in clinical practice. The REDISCOVER (Responding to Increasing Cardiovascular disease prevalence) study is an observational longitudinal community-based study that tracks changing lifestyles, risk factors and chronic disease in urban and rural areas of Malaysia. In this study, we aim to study the prevalence of AF and its associated risk factors. Methods The study was conducted between 2007 and 2014. Participants were required to complete questionnaires on cardiovascular risk factors and medical history, and undergo physical examinations, blood tests, ECG and echocardiography examinations. Demographic variables including weight, height, blood pressure, serum glucose and serum lipid were recorded. Participants with AF were identified from their baseline ECG and at 3-year follow up. Results A total of 10 805 subjects participated in the study. Mean age was 52.6(±11.6) years and 56% were female; 4.4% of subjects had a diagnosis of ischaemic heart disease, 1.3% had a previous stroke, 16.7% had diabetes mellitus and 45.6% had hypertension. There were 53 subjects diagnosed with AF at baseline, giving a prevalence of 0.49%, and 0.54% at 3 years. AF was more prevalent in males (58.5% in the AF group compared to 43.9% in sinus rhythm (SR) subjects; p=0.03) and the older age group. Ischaemic heart disease was more prevalent in AF subjects (22.6%) compared to SR subjects (4.4%) (p<0.001). In the AF group previous stroke had occurred in 1.9% of subjects compared to 1.3% in the SR population (p=0.51), and 24.5% of subjects in the AF group had diabetes compared to 16.6% in the SR group (p=0.12). There was a significant difference in the prevalence of hypertension between the AF group (59.6%) compared to the SR subjects (45.5%) (p=0.04). Conclusions The prevalence of AF in the Malaysian population was low at 0.54% compared to the global average of 1%. We found that AF was associated with older age, male sex, hypertension, and ischaemic heart disease.

Responsive and Equitable Health Systems—Partnership on Non-Communicable Diseases (RESPOND) study: a mixed-methods, longitudinal, observational study on treatment seeking for hypertension in Malaysia and the Philippines

Introduction Hypertension is a leading contributor to the global burden of disease. While safe and effective treatment exists, blood pressure control is poor in many countries, often reflecting barriers at the levels of health systems and services as well as at the broader level of patients’ sociocultural contexts. This study examines how these interact to facilitate or hinder hypertension control, taking into account characteristics of service provision components and social contexts. Methods and analysis The study, set in Malaysia and the Philippines, builds on two systematic reviews of barriers to effective hypertension management. People with hypertension (pre-existing and newly diagnosed) will be identified in poor households in 24–30 communities per country. Quantitative and qualitative methods will be used to examine their experiences of and pathways into seeking and obtaining care. These include two waves of household surveys of 20–25 participants per community 12–18 months apart, microcosting exercises to assess the cost of illness (including costs due to health seeking activities and inability to work (5 per community)), preliminary and follow-up in-depth interviews and digital diaries with hypertensive adults over the course of a year (40 per country, employing an innovative mobile phone technology), focus group discussions with study participants and structured assessments of health facilities (including formal and informal providers). Ethics and dissemination Ethical approval has been granted by the Observational Research Ethics Committee at the London School of Hygiene and Tropical Medicine and the Research Ethics Boards at the Universiti Putra Malaysia and the University of the Philippines Manila. The project team will disseminate findings and engage with a wide range of stakeholders to promote uptake and impact. Alongside publications in high-impact journals, dissemination activities include a comprehensive stakeholder analysis, engagement with traditional and social media and ‘digital stories’ coproduced with research participants.

Pattern and predictors of outcomes for infective endocarditis in North Kuala Lumpur

Context: Infective endocarditis (IE) still carries significant mortality and morbidity ever since 1835. Despite improvement in medical technologies, mortality outcome remains unchanged. We sought to analyze the pattern of presentation, treatment, and outcomes predictors for patient presenting to our hospital. This study will explore some of the factors that could be associated with the outcome of a patient diagnosed with IE for a better guidance in management. Subjects and Methods: This is a retrospective dual center cohort study from North Kuala Lumpur from January 2012 to December 2013. Fifty patients with definite IE based on modified Dukes criteria were recruited into the study. Clinical presentation, risk factors, biochemical markers, echocardiography, and outcome were obtained through chart review, clinic data, and telephone call. Simple logistic regression was utilized for inferential statistic. Results: A total of 50 patients, 37 (74%) males and 13 (26%) females were included in the study. The mean age was 42 ± 16.4. Most patients (80.39%) were diagnosed within the 1st week of admission. Staphylococcus aureus was the most common pathogen (38%) and the mitral valve was predominantly affected (68%). Complication was common and in-hospital mortality remains high (28%). Nearly 20% of the patients who had surgical intervention survived and discharged alive. Presence of complications predicts poor outcome (odds ratio [OR]: 5.5 P = 0.02), whereas surgical intervention predicts good outcome (OR: 1.56 P = 0.027). Conclusions: Mortality remains relatively high in patient with IE. Those who presented with complications are at 5.5-fold risk of mortality. Surgical intervention showed an association with good outcome within this cohort.