Common perioperative arrhythmias and management algorithm. Doses of commonly used antiarrhythmic drugs. AVNRT, atrioventricular node re-entry tachycardia; AVRT, atrioventricular re-entry tachycardia; BBB, bundle branch block; EF, ejection fraction; SVT, supraventricular tachycardia; VT, ventricular tachycardia.