It is a class II antiarrhythmic. Esmolol decreases the force and rate of heart contractions by blocking beta-adrenergic receptors of the sympathetic nervous system, which are found in the heart and other organs of the body. Esmolol prevents the action of two naturally occurring substances: epinephrine and norepinephrine. ==Dosing== Esmolol is give... Found on http://en.wikipedia.org/wiki/Esmolol
<drug> A beta-adrenergic blocking agent with brief duration of action. ... Pharmacologic action: Short acting beta-blocker with rapid onset. Beta-1 selective at normal doses. Reduces heart rate, myocardial contractility, and blood pressure, but also reduces myocardial oxygen demand. ... Uses: Consider use of this beta-blocker for atrial fibri... Found on http://www.encyclo.co.uk/local/20973
(es´mo-lol) a cardioselective beta-adrenergic blocking agent used as the hydrochloride salt in treatment of arrhythmias for short-term control of atrial fibrillation, atrial flutter, and noncompensatory sinus tachycardia. Found on http://www.encyclo.co.uk/local/21001