since arrhythmia suppression in this population is of unproven benefit , we performed the following study : a total of 246 patients ( 42 % with significant left ventricular dysfunction ) had complex ventricular arrhythmias , and were treated with one of eight antiarrhythmic drugs ( vaughan williams classes ia , ib , ic , ii , and iii ) .
C0003811
arrhythmia
C0085612
ventricular arrhythmias