among the 32 patients with supraventricular arrhythmias , 9 cases of vagally dependent atrial flutter and fibrillation were less sensitive to propafenone ( mean effect 1.4 ) than to quinidine ( mean effect 2.0 ) or amiodarone ( mean effect 2.3 ) .
C0033429
propafenone
C0034414
quinidine