Orthostatic hypotension: prevalence and associated risk factors among the ambulatory elderly in an Asian population

<p><b>INTRODUCTION</b>The prevalence of orthostatic hypotension (OH) among the elderly population in Singapore, as defined by a decline in blood pressure upon a change in position, is not well-established. Studies associate OH with clinically significant outcomes such as falls. This study aims to determine the prevalence of OH among elderly patients attending a public primary care clinic (polyclinic) for chronic disease management, and examine the relationships between postulated risk factors and OH.</p><p><b>METHODS</b>Patients aged ≥ 65 years attending a typical polyclinic in Geylang were identified and targeted for recruitment at the study site. A questionnaire on symptoms and postulated risk factors was administered, followed by supine and standing blood pressure measurements. Cross-sectional analysis was performed with independent sample t-test for continuous data and chi-square test for categorical data. Prevalence rate ratios with 95% confidence interval were calculated for the latter.</p><p><b>RESULTS</b>A total of 364 multiethnic patients participated in the study. The prevalence of OH was 11.0%. Older age, comorbidities such as cardiac failure and kidney disease, being physically inactive at work, fatigue, self-reported dizziness in the past year, and the use of loop diuretics were found to be significantly associated with OH.</p><p><b>CONCLUSION</b>About one in ten elderly patients at a local polyclinic was affected by OH, which was associated with multiple factors. Some of these factors are modifiable and can be addressed to reduce the incidence of OH.</p>

Incidence of needlestick injuries among medical students after implementation of preventive training

<p><b>INTRODUCTION</b>Structured training for the prevention of needlestick injuries (NSIs) among medical students was implemented in Singapore in 1998. In this study, we determined the incidence of NSIs and the knowledge and practice of managing and reporting NSIs among first-year clinical students in a medical school in Singapore, as well as the adequacy of the training provided for these students, 14 years after preventive training was instituted.</p><p><b>METHODS</b>All third-year medical students (n = 257) from the Yong Loo Lin School of Medicine, National University of Singapore, Singapore, who had completed their first clinical year posting were enrolled in this cross-sectional study. A self-administered questionnaire was answered by the students one month after completion of their last clinical posting. Students who repeated their first clinical year were excluded from the study.</p><p><b>RESULTS</b>237 students completed the questionnaire. However, 9 of these students were excluded because they repeated their first clinical year. The response rate was 91.9%. Although 8 (3.5%) students reported one NSI each, only 2 (25.0%) of these 8 students reported the incident to the relevant authority. Among the students surveyed, 65.8% reported using gloves at all times during venepuncture procedures, 48.7% felt that improvements could be made to the current reporting system and procedures, and 53.2% felt that the training provided before commencement of clinical posting could be enhanced.</p><p><b>CONCLUSION</b>There was a decrease in the incidence of NSIs among medical undergraduates in their first clinical year when compared to the incidences reported in earlier studies conducted in the same centre (35.1% in 1993 and 5.3% in 2004). The current reporting system could use a more user-friendly platform, and training on NSIs could be improved to focus more on real-life procedures and incident reporting.</p>

Preventive Measures to Eliminate Asbestos-Related Diseases in Singapore

The incidence of asbestos-related diseases (ARD) has increased in the last four decades. In view of the historical use of asbestos in Singapore since the country started banning it in phases in 1989 and the long latency of the disease, the incidence of ARD can be expected to increase further. As occupational exposure to asbestos still occurs, preventive measures to eliminate ARD continue to be required to protect the health of both workers and the public from asbestos exposure. The majority of occupational exposures to asbestos at present occur during the removal of old buildings. Preventive measures have been utilized by different government ministries and agencies in eliminating ARD in Singapore over the past 40 years. These measures have included the enforcement of legislation, substitution with safer materials, and engineering controls during asbestos removal as well as improvements in personal hygiene and the use of personal protective equipment. The existing Workman's Compensation System for ARD should be further refined, given that is currently stipulates that claims for asbestosis and malignant mesothelioma be made within 36 and 12 months after ceasing employment.

Knowledge, attitudes and practices of the Advance Medical Directive in a residential estate in Singapore

<p><b>INTRODUCTION</b>This study investigates the knowledge, attitudes and practices of residents in a residential estate in Singapore on the Advance Medical Directive (AMD).</p><p><b>MATERIALS AND METHODS</b>A community-based cross-sectional study was conducted with residents in the residential estate of Toa Payoh Lorong 6, Singapore. A stratifi ed random sampling was conducted to obtain a representative sample of the estate. Only residents aged 21 years and older were included. An interviewer-administered questionnaire was conducted, and only those who understood the AMD suffi ciently were further evaluated on their knowledge, attitudes and practices.</p><p><b>RESULTS</b>A total of 414 residents were enrolled (50.1% response rate). Only 37.9% of the participants knew about the AMD prior to this study. Participants who had a higher knowledge level of AMD, did not wish "for an artifi cially prolonged life", "to be kept alive indefi nitely on a life-support machine", wished to "lessen the fi nancial burden of loved ones", "avoid prolonged suffering" and accepted the "imminence of death" were more willing to sign an AMD. However, "religious beliefs", "personal ethical views", "dissuasion by family members" and "unclear terminology in the AMD" discouraged the participants from signing an AMD. After adjusting for signifi cant factors, participants who did not wish "to be kept alive indefi nitely on a life-support machine" and accepted the "imminence of death" were found to correlate signifi cantly with the willingness to sign an AMD [Prevalence Rate Ratio (PRR) = 2.050 [1.140-3.685], P = 0.016; PRR = 2.669 [1.449-4.917], P = 0.02, respectively].</p><p><b>CONCLUSIONS</b>There is a need to increase awareness on the AMD. Public education methods can be improved to inform residents on the implications of the AMD.</p>

The doctor in claims for work injuries and ill health--legal pitfalls

Occupational health work is currently undertaken by the specialist and the non-specialist physician alike. The work scope can vary from medical assessments of individual workers to health risk assessment at the workplace. The scope of the latter will include evaluation of exposures, hazards, risks and its management to control these risks. Much of the case law governing legal disputes over industrial safety and health have involved the employers. Over the years, the actions brought forth by workers have resulted in a formidable volume of case law based on statutes and on the common law of negligence in tort. Disputes over the assessment of workers' health or workplace health risks to the extent that it is a failure to discharge a reasonable standard of care, may result in the doctor being a defendant. Measures to prevent these legal pitfalls include communication with employers about the causative link of the illness suffered to workplace factors and the clarity of contractual obligations undertaken with regard to workplace health risk assessment.

Bridging the gap between occupational medicine and family medicine

Family medicine and occupational medicine share close similarities in their focus on disease prevention and health promotion. The opportunities for mutual learning and collaboration in patient care abound, with far-reaching implications on the standard of patient care that can be offered. Unfortunately, a gap exists between family medicine and occupational medicine in dayto- day practice as well as in continuing medical education. It is important that we actively seek to bridge this gap. The workforce constitutes a significant part of the population and thus the patient load of a typical primary healthcare practice. Moreover, with an ageing population and rising retirement age, we can expect that there will be an increasing number of health issues to be addressed among older working people. Both occupational and non-occupational factors are important in determining an individual's health. Thus, family physicians need to adequately understand occupational medicine and vice versa.