Comparative efficacy of antiarrhythmic medications for sinus rhythm maintenance after electrical cardioversion for atrial fibrillation

Antiarrhythmic medications of Ic class may be safe in patients with persistent form of atrial fibrillation and have no negative impact on inotropic function of myocardium. The most commonly used drug from Ic class ir etacizin. The observed efficacy provides the rationale for a larger, double-blind controlled study with different antiarrhythmic medications in different daily dosage.