forty-eight patients had ventricular arrhythmias , with multiform ventricular premature beats in 21 ( 40 % ) , pairs of runs of ventricular tachycardia in 15 patients ( 28 % ) , and 1 or more runs of ventricular tachycardia in 7 ( 13 % ) .
C0039231
tachycardia
C0042514
ventricular tachycardia