beta blocker(redirected from Beta-receptor antagonist)
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beta blockerBeta-adrenergic blocking agent Pharmacology Any of a class of agents that blocks β1 and/or β2 adrenergic receptors in the nervous system Effect ↓ Heart rate, ↓ BP, ↓ anxiety Indications Angina, arrhythmias, HTN, mitral valve prolapse, tachycardia, etc
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
A drug that prevents the normal action of a system or cell receptor. See: antagonist; blockade; inhibitor
beta blockerBeta-adrenergic blocking agent.
bronchial blockerAbbreviation: BB
A device for facilitating single-lung ventilation during thoracic surgery or thoracoscopy. The bronchial blocker is placed into the mainstem bronchus on the side of the chest where the operation is being performed, and its balloon is inflated within the airway. Potential complications of the device include dislodgement, misplacement, or accumulation of fluid behind the blockade.
calcium channel blockerAbbreviation: CCB
Any of a group of drugs that slow the influx of calcium ions into smooth muscle cells, resulting in decreased arterial resistance and oxygen demand. These drugs are used to treat angina, hypertension, vascular spasm, intracranial bleeding, congestive heart failure, and supraventricular tachycardia. Because hypotension occurs as both an intended and, occasionally, an unwelcome effect, blood pressure must be monitored especially closely during the initial treatment period.
H2 blockerSee: H2-receptor antagonist
Medical Dictionary, © 2009 Farlex and Partners
A drug that can be used to reduce blood pressure.
Mentioned in: Mitral Valve Stenosis
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.