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beta -blocker
(redirected from beta-adrenergic blocking agent)

   Also found in: Dictionary/thesaurus, Medical, Financial, Wikipedia 0.01 sec.

beta -blocker

 in full beta-adrenergic blocking agent

Any of a class of synthetic drugs used to treat a wide range of diseases and conditions of the sympathetic nervous system (see autonomic nervous system). Stimulation by epinephrine of beta-adrenergic receptors, which are predominately found in the heart but are also present in vascular and other smooth muscle, results in excitation of the sympathetic nervous system. By preventing that excitation, beta-blockers are useful in controlling anxiety, hypertension, and a variety of heart conditions (see heart disease). They reduce the risk of a second heart attack.



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Because of the potential effects of beta-adrenergic blocking agents on blood pressure and pulse, these agents should be used with caution in patients with cerebrovascular insufficiency.
Beta-Adrenergic Blocking Agents Classification/Drug Trade Names Starting Dosage Acebutolol (*) Sectral 200 mg BID Atenolol (*) Tenormin 50 mg QD Betaxolol Kerlone 10 mg QD Bisoprolol Bezeta 2.
Beta-Adrenergic Blocking Agents -- Propranolol (Inderal) and timolol (Blocadren) are the only two beta blockers approved by the Food and Drug Administration.
 
 
 
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