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Uncontrolled hypertension in rural communities
Researchers at Duke-NUS Medical School have published a paper studying factors that lead to poor hypertension control in individuals who are currently treated for hypertension.

In Singapore, about a quarter of people with hypertension are unaware and therefore remain untreated. About a third of those diagnosed on treatment have uncontrolled blood pressure (BP) (uncontrolled BP is defined as systolic BP ≥ 140 mmHg or diastolic BP ≥ 90 mmHg). This is worrying because hypertension is a leading risk factor for cardiovascular and kidney disease, and premature death globally. Over 1.1 billion people globally are affected with hypertension, and this number is expected to increase to over 1.5 billion by 2025.

Hypertension is persistent high blood pressure (BP). While the prevalence of hypertension among Singaporeans has lowered slightly in the past 20 years, the prevalence among Singaporeans over 40 years old have risen notably. With the ageing population, prevention and control of hypertension is an increasing challenge. According to Global Burden of Disease 2016, high blood pressure confers the highest attributable risk of death in Singapore.

The reasons for the poor BP control among individuals with hypertension are not well understood. Researchers at the Duke-NUS Medical School, led by Professor Tazeen Jafar, and funded by the UK-Medical Research Council, Wellcome Trust, and Dfid, studied participants treated for hypertension to find out why.1

The study was done on the rural communities of Bangladesh, Pakistan, and Sri Lanka, as hypertension is a particularly serious problem in South Asia, where the prevalence of hypertension is 40 per cent.

The researchers found three main barriers to controlling hypertension. Often, the participants do not take their antihypertensive medicines. These findings are consistent with other reports of adults with uncontrolled BP in other low- and middle-income countries.

Second, the participants were only prescribed one antihypertensive medication. Studies have shown that it takes two to three antihypertensive medications to control BP.

Finally, a lack of familial or social support. For example, single participants were more likely to have uncontrolled hypertension compared to married participants. Programmes to engage family support have shown promising results in rural China.

Professor Jafar, who is a professor at the Health Services & Systems Research Programme at Duke-NUS, advised that while failing to control BP can lead to more severe health problems, lowering BP does reduce the risk for cardiovascular and kidney disease. “Controlling BP should be a priority, as the consequences of a lack of action will be far more costly,” she added.

Reference

  1. Jafar TH, Gandhi M, Jehan I, et al., Determinants of Uncontrolled Hypertension in Rural Communities in South Asia - Bangladesh, Pakistan, and Sri Lanka. Am J Hypertension, 26 April 2018. https://doi.org/10.1093/ajh/hpy071.
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APBN Editorial Calendar 2018
January:
Obesity / Outlook for 2018
February:
Searching for the fountain of youth
March:
Women in Science - Making a difference
April:
Digestive health in the 21st century - Trust your guts
May:
Dental health - The root to good health
June:
Cancer - Therapies and strategies for better patient outcomes
July:
Water management - Technologies for biotech and pharmaceutical industries
August:
Regenerative technology - Meat of the future
September:
Doctor Robot - The digital healthcare revolution
October:
Bones / Breast cancer
November:
Liver health / Top science research nations & institutions
December:
AIDS / Breakthrough of the year/Emerging trends
Editorial calendar is subjected to changes.
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