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Current and future status of beta-blockers in the treatment of hypertension
Steven G Chrysant1, George S Chrysant, Billy Dimas
1Oklahoma Cardiovascular and Hypertension Center, Oklahoma City, Oklahoma 73132-4704, USA. schrysant@yahoo.com
Insights
Beta-adrenergic receptor blockers (beta-blockers) remain effective and safe first-line treatments for hypertension. While generally safe, older beta-blockers may affect glucose control and stroke protection in specific patient groups.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Beta-adrenergic receptor blockers (beta-blockers) have been recommended as first-line hypertension therapy since 2003.
- Recent studies have questioned the antihypertensive effectiveness and safety of beta-blockers.
Purpose of the Study:
- To review the literature on the effectiveness and safety of beta-blockers for hypertension.
- To provide a historical perspective on beta-blocker discovery and mechanism of action.
Main Methods:
- Searched Medline and other literature up to 2007 for pertinent studies.
- Analyzed retrieved clinical trials and publications.
Main Results:
- Most short-term and long-term trials show beta-blockers are effective and safe for hypertension.
- Older beta-blockers may adversely affect glucose control and stroke protection, particularly in the elderly.
- These adverse effects are linked to their mechanism and blood pressure effectiveness.
Conclusions:
- Beta-blockers are effective and safe antihypertensive drugs, suitable for first-line therapy in most uncomplicated hypertensive patients.
- Reservations exist for diabetic and elderly hypertensive patients, but compelling indications warrant their use.
- Beta-blockers should not be withheld when there are clear reasons for their prescription.
Abstract:
Beta-adrenergic receptor blockers (beta-blockers) are effective and safe antihypertensive drugs, and have been recommended as first-line therapy for hypertension by all Joint National Committees (JNCs) for the prevention, detection, evaluation, and treatment of high blood pressure (BP) from the first to the last (JNC-7) in 2003. However, recently questions have been raised by several investigators regarding the antihypertensive effectiveness and safety of these drugs. The Medline literature on this subject was searched and pertinent studies were retrieved. Other pertinent references from existing publications were retrieved and analyzed up to 2007. Additionally, a historical perspective on the discovery of beta-blockers and their mechanism of action is given. Most of the reviewed short-term and long-term clinical trials demonstrate an effective and safe antihypertensive pattern for the beta-blockers. The weaknesses identified include the adverse effect of older beta-blockers on glucose control and stroke protection, especially in older persons. These adverse effects are attributed to their mechanism of action and BP effectiveness. On the basis of the evidence presented, beta-blockers are effective and safe antihypertensive drugs and should still be recommended as first-line therapy in most uncomplicated hypertensive patients, either alone or in combination with other drugs. There are reservations regarding their administration to diabetic and older hypertensive patients. However, when compelling indications for their use exist, they should not be withheld.
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