Ibutilide is more effective than sotalol for acute reversion of atrial tachyarrhythmias

Among 281 patients with atrial fibrillation or atrial flutter randomized to intravenous ibutilide or intravenous sotalol, both doses of ibutilide were more effective than sotalol for reverting atrial flutter. Among the patients with atrial fibrillation, only the higher dose of ibutilide was significantly more effective than sotalol for restoring sinus rhythm.