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Secondary prevention of stroke by blood pressure-lowering treatment
Hisatomi Arima1, John Chalmers
1The George Institute for International Health, University of Sydney, PO Box M201, Missenden Road, NSW 2050, Australia. jchalmers@thegeorgeinstitute.org
Insights
Lowering blood pressure is crucial for stroke prevention. Effective treatment strategies, including combination therapy with ACE inhibitors or angiotensin II-receptor blockers and diuretics, are recommended for all stroke patients to achieve target blood pressure goals.
Area of Science:
- Neurology
- Cardiology
- Pharmacology
Background:
- High blood pressure is a primary modifiable risk factor for stroke.
- Blood pressure-lowering treatment is a highly effective strategy for secondary stroke prevention.
Purpose of the Study:
- To emphasize the importance of blood pressure management in stroke patients.
- To recommend specific therapeutic strategies for secondary stroke prevention.
Main Methods:
- Review of randomized trials on blood pressure-lowering treatments.
- Analysis of established and alternative combination therapies.
Main Results:
- Blood pressure-lowering therapy is recommended for all stabilized stroke patients, regardless of initial blood pressure levels.
- Combination therapy with an ACE inhibitor plus a diuretic is an established regimen.
- Angiotensin II-receptor blockers offer an alternative, especially with diuretics, for ACE inhibitor-intolerant patients.
Conclusions:
- Achieving goal blood pressures (< 130/80 mm Hg for hypertensive, < 120/80 mm Hg for normotensive/prehypertensive) is essential for secondary stroke prevention.
- Combination blood pressure-lowering therapy is the recommended approach to reach these goals.
Abstract:
High blood pressure is the most important modifiable risk factor for stroke, accounting for more than 50% of the population-attributable fraction for stroke. There is now strong evidence from randomized trials that blood pressure-lowering treatment is one of the most effective and generalizable strategies for secondary prevention of stroke. Once the patient with stroke has stabilized, all patients should receive blood pressure-lowering therapy, irrespective of their blood pressure levels. Combination therapy with an angiotensin-converting enzyme (ACE) inhibitor plus a diuretic is an established regimen, but an angiotensin II-receptor blocker may provide an alternative regimen in patients who do not tolerate an ACE inhibitor, especially in combination with a diuretic. For patients with previous stroke, goal blood pressures of < 130/80 mm Hg in hypertensive subjects and < 120/80 mm Hg in normotensive (or "prehypertensive") subjects should be achieved using combination blood pressure-lowering therapy.
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