the efficacy of metoprolol , 5-15 mg i.v. , in the treatment of supraventricular tachyarrhythmias was evaluated in a multi-centre study involving 142 patients , 28 of whom had paroxysmal atrial tachycardia , 35 atrial flutter and 79 atrial fibrillation .
C0025859
metoprolol
C0004238
atrial