Measuring blood pressure and taking meds to reach target levels
Original: eternity4719 · source details
Original author: eternity4719 · Chinese source: · English adaptation: parveen0029. Translation and grade notes ↗
Bibliographic titles are retained in their original language.
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Cost and benefit at a glance
- Check the cost Cost ↓
- An electronic sphygmomanometer costs 100–200 RMB. Each measurement takes 1 minute. Most antihypertensive drugs cost just a few to dozens of RMB per month. The h…
- Then the source benefit Benefit ↓
- Data from 123 clinical trials involving over 610,000 participants shows that a 10 mmHg reduction in systolic blood pressure lowers the incidence of major cardiovascular events by r…
In plain terms
For every 10 mmHg drop in blood pressure, the risk of major cardiovascular problems falls by 20%, stroke risk drops 27%, heart failure risk drops 28%, and overall mortality risk declines by 13%. Among Chinese adults aged 35–75, 44.7% have hypertension, but only 7.2% have their blood pressure under proper control.
This guide's cartoon · show illustration
Enlarge illustrationOriginal illustration with Chinese lettering; the English dialogue is below. Humour is a reading aid, not evidence.
English dialogue
- Just popping out.
- Read the safety page first.
Cost: what it takes
An electronic sphygmomanometer costs 100–200 RMB. Each measurement takes 1 minute. Most antihypertensive drugs cost just a few to dozens of RMB per month. The hard part is keeping the medication regimen even when there are no symptoms.
Benefit: what the source reports
Data from 123 clinical trials involving over 610,000 participants shows that a 10 mmHg reduction in systolic blood pressure lowers the incidence of major cardiovascular events by roughly 20%. The relative risk is 0.80, with a 95% confidence interval of 0.77–0.83. Systolic blood pressure is the higher of the two readings taken during a measurement. Stroke risk drops by 27% (RR 0.73), heart failure risk drops by 28% (RR 0.72), and overall mortality drops by 13% (RR 0.87, 95% CI 0.84–0.91). A screening program in China involving 1.7 million adults aged 35–75 found that 44.7% had hypertension; of these, 44.7% were aware of their condition, 30.1% were receiving treatment, and only 7.2% had their blood pressure under control.
Conditions, limits and disagreements
Start by getting your blood pressure measured at least once. Fewer than 1 in 10 Chinese adults with hypertension manage to keep their levels under control, so this single measurement is one of the most cost-effective actions you can take as outlined in this book. There is still some debate over what exact target level (130 or 140 mmHg) is ideal, but there is no dispute that knowing you have hypertension and taking steps to lower it is highly beneficial.
Original references
Original bibliographic titles and links are preserved; some titles are in Chinese.
Ettehad D 等 (2016). Blood pressure lowering for prevention of cardiovascular disease and death: a systematic review and meta-analysis. Lancet. https://doi.org/10.1016/S0140-6736(15)01225-8 ; Lu J 等 (2017). Prevalence, awareness, treatment, and control of hypertension in China (China PEACE Million Persons Project). Lancet. https://doi.org/10.1016/S0140-6736(17)32478-9
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