twenty-six patients with weekly attacks of atrial fibrillation during the last 3 months , objectified by 24-h holter monitoring or 12-lead electrocardiogram ( ecg ) were treated for a period of 3 months with flecainide 100 mg b.i.d . or quinidine 500 mg b.i.d .
C0004238
atrial fibrillation
C0034414
quinidine