of 5 patients with spontaneous arrhythmia , 3 had ventricular tachycardia induced before and after intravenous encainide at mean cycle lengths of 287 +/- 130 msec and 407 +/- 261 msec , ( not significant ) respectively , while 1 had ventricular tachycardia induced only after encainide .
C0003811
arrhythmia
C0085251
encainide