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Published on: September 26, 2018
Risk stratification for the prevention of cardiovascular complications of hypertension
Xavier Girerd1, Philippe Giral
1Department of Endocrinolgy and Metabolism, Cardiovascular Preventive Unit, Hôpital de La Pitié-Salpêtrière, Paris, France. xavier.girerd@psl.ap-hop-paris.fr
Insights
Arterial hypertension increases risk for coronary artery disease and stroke. Combining antihypertensive therapy with statins significantly reduces cardiovascular events in high-risk patients.
Area of Science:
- Cardiology
- Hypertension Research
- Preventive Medicine
Background:
- Arterial hypertension is a significant risk factor for coronary artery disease (CAD) and stroke.
- Current treatment decisions for hypertension often rely solely on blood pressure levels.
- Cardiovascular risk assessment is crucial for personalized hypertension management.
Purpose of the Study:
- To review major trials and emphasize the need for comprehensive cardiovascular risk assessment in hypertensive patients.
- To analyze the differential efficacy of antihypertensive drugs in preventing coronary versus cerebrovascular events.
- To evaluate the role of statins in cardiovascular risk reduction for hypertensive individuals.
Main Methods:
- Cross-sectional analysis of major clinical trials on hypertension and cardiovascular outcomes.
- Meta-analysis of studies investigating the impact of blood pressure reduction on stroke and coronary events.
- Review of controlled trials evaluating the efficacy of statins in preventing coronary disease.
Main Results:
- Hypertensive patients have a 2-3 times higher coronary risk than cerebrovascular risk.
- Antihypertensive drugs are more effective in preventing cerebrovascular events than CAD for the same blood pressure reduction.
- A 2 mmHg systolic blood pressure reduction lowers stroke events by 25%; 5 mmHg is needed for coronary event prevention.
- Statins are highly effective in preventing coronary disease.
Conclusions:
- An integrated strategy of antihypertensive therapy and statin prescription is optimal for cardiovascular risk reduction in hypertensive patients.
- The ASCOT trial demonstrated significant reduction in coronary events with combined therapy.
- Personalized cardiovascular risk assessment should guide treatment decisions for hypertension.
Abstract:
Arterial hypertension is a well established risk factor for both coronary artery disease (CAD) and stroke. The decision to treat hypertension and prevent cardiovascular complications has, for many years, been based on the level of blood pressure. The present review, based on a cross-sectional and careful analysis of major trials, emphasises the need to assess the cardiovascular risk for each patient in order to make appropriate treatment decisions. Evaluation of cardiovascular risk in untreated hypertensive subjects indicates that coronary risk is two to three times higher than cerebrovascular risk. The same results have been observed in outcome trials where hypertensive patients were treated with antihypertensive drugs. Even though the results of outcome trials for antihypertensive drugs can be explained by blood pressure differences between randomised groups, antihypertensive drugs are, for the same reduction in blood pressure, more efficient in preventing cerebrovascular events than in preventing (CAD). Meta-analysis indicates that each reduction of 2 mmHg in systolic blood pressure levels is associated with a 25% reduction in stroke events, but a difference of at least 5 mmHg for systolic pressure between groups is necessary to obtain prevention of coronary events. A number of controlled trials using statins have shown that these drugs were particularly effective in preventing coronary disease. An appropriate therapeutic strategy for cardiovascular risk reduction in hypertensive patients should therefore include both antihypertensive therapy and prescription of a statin. The efficacy of this strategy was recently reported in the ASCOT trial, which estimated that for 100 hypertensive patients with a high cardiovascular risk and followed up for 10 years, the number of coronary events is 13, 10 and 7 for those without antihypertensive treatment, with antihypertensive therapy only and with both antihypertensive therapy and statin therapy, respectively.
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