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[Focus on beta-blockers for vascular specialists in 2012]
S Mairesse1, J Blacher, M-E Safar
1Unité d'Hypertension Artérielle, Prévention et Thérapeutique Cardiovasculaires, Centre de Diagnostic et de Thérapeutique, Université Paris-Descartes, Hôtel-Dieu, AP-HP, place du Parvis-Notre-Dame, 75004 Paris, France.
Insights
Beta-blockers effectively reduce mortality in heart attack and heart failure patients. However, their use in hypertension is debated due to potential increased cardiovascular risks, necessitating further research.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Beta-blockers, available since 1964, have established cardiovascular benefits.
- Numerous studies confirm their efficacy in reducing mortality for various cardiovascular conditions.
Purpose of the Study:
- To review the established and debated indications for beta-blockers in cardiovascular diseases.
- To assess the current evidence regarding beta-blockers in hypertension, post-infarction care, heart failure, and perioperative settings.
Main Methods:
- Review of existing literature, meta-analyses, and clinical guidelines.
- Analysis of study outcomes concerning mortality, cardiovascular events, and blood pressure control.
Main Results:
- Beta-blockers reduce mortality in post-infarction, acute coronary syndrome, and heart failure patients.
- While recommended for rate control in atrial fibrillation, their first-line use in hypertension is questioned due to potential increased risks.
- Perioperative use shows disappointing results, and peripheral artery disease may favor their prescription.
Conclusions:
- Beta-blockers remain crucial for heart failure and post-infarction care.
- Further research on central blood pressure effects is needed to clarify their role in hypertension management.
- Their utility in other vascular conditions requires careful consideration.
Abstract:
Since they were launched on the market in 1964, cardiovascular indications for beta-blockers have been validated and accepted worldwide. Numerous studies and meta-analysis have confirmed their benefits. They reduce mortality in post infarction and acute coronary syndrome populations and also in people with stable coronary heart disease. Moreover, heart failure with systolic left ventricular dysfunction is a major indication for this therapeutic class, providing a 30% decrease in mortality. In patients with permanent atrial fibrillation, beta-blockers are recommended for rate control. In hypertension patients, first-line drug treatment with beta-blockers is currently discussed. Indeed, several studies have shown that patients randomized in the beta-blocker arms experienced more coronary heart and cerebrovascular diseases than comparators. Their lesser effect on central blood pressure decrease could partially explain those results. Nevertheless, beta-blockers are still considered as first-line drugs for hypertension in the French and European guidelines. Long-term comparative studies focusing on central blood pressure are needed. Concerning the other indications for beta-blockers in vascular diseases, their use perioperatively to reduce surgical cardiovascular risk raised much hope, but the most recent results are disappointed and even suggest possible higher mortality. Finally, except for patients with critical ischemia of the lower limbs, presence of peripheral artery disease should probably be considered as a condition favoring their prescription.
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