and prolonged sinus pauses after AF termination, which is also known as tachycardia-bradycardia syndrome. When antiarrhythmic drugs (AADs) are administered for rhythm or ventricular rate control ...

and for conversion of AF to normal sinus rhythm. It is contraindicated in patients with long QT syndromes. Ibutilide can be used as a one-time intravenous infusion for pharmacologic cardioversion ...