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Primary stroke prevention and hypertension treatment: which is the first-line strategy?
Roberta Ravenni1, Joe F Jabre, Edoardo Casiglia
1Department of Neuroscience, Santa Maria della Misericordia Hospital, Rovigo, Italy;
Insights
Lowering blood pressure (BP) with antihypertensive drugs reduces stroke risk. Different drug classes offer varying benefits, and combination therapy is logical. Fixed-dose combinations may improve BP control, but trials are needed to confirm stroke prevention efficacy.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Pharmacology
Background:
- Hypertension (HT) is a primary vascular risk factor for stroke.
- Antihypertensive treatments reduce stroke risk, but benefits vary by drug class.
- Current guidelines recommend specific BP goals for stroke prevention.
Purpose of the Study:
- To review the role of different antihypertensive agents in stroke risk reduction.
- To evaluate the rationale for combination therapy in managing hypertension.
- To discuss the potential of fixed-dose combinations (FDCs) for improving BP control and stroke prevention.
Main Methods:
- Literature review of extensive evidence on antihypertensive agents and stroke risk.
- Analysis of current guidelines for hypertension management in primary stroke prevention.
- Discussion of the implications of newly available fixed-dose combinations (FDCs).
Main Results:
- Angiotensin-converting enzyme inhibitors (ACEI), angiotensin II receptor blockers (ARB), dihydropyridine calcium channel blockers (CCB), and thiazide diuretics have demonstrated stroke risk reduction.
- Combination therapy using these classes is a logical approach for achieving BP goals.
- A significant portion of the population remains undiagnosed or undertreated for HT, posing a high stroke risk.
Conclusions:
- While established antihypertensive classes reduce stroke risk, individual efficacy varies.
- Fixed-dose combinations of ACEI/ARB and CCB offer potential for better BP control.
- Further clinical trials are necessary to confirm the efficacy of FDCs in primary stroke prevention.
Abstract:
Hypertension (HT) is considered the main classic vascular risk factor for stroke and the importance of lowering blood pressure (BP) is well established. However, not all the benefit of antihypertensive treatment is due to BP reduction per se, as the effect of reducing the risk of stroke differs among classes of antihypertensive agents. Extensive evidences support that angiotensin-converting enzyme inhibitors (ACEI), angiotensin II receptor blockers (ARB), dihydropyridine calcium channel blockers (CCB) and thiazide diuretics each reduced risk of stroke compared with placebo or no treatment. Therefore, when combination therapy is required, a combination of these antihypertensive classes represents a logical approach. Despite the efficacy of antihypertensive therapy a large proportion of the population, still has undiagnosed or inadequately treated HT, and remain at high risk of stroke. In primary stroke prevention current guidelines recommend a systolic/diastolic BP goal of <140/<90 mmHg in the general population and <130/80 mmHg in diabetics and in subjects with high cardiovascular risk and renal disease. The recent release in the market of the fixed-dose combination (FDC) of ACEI or ARB and CCB should provide a better control of BP. However to confirm the efficacy of the FDC in primary stroke prevention, clinical intervention trials are needed.
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