in these 16 animals , programmed stimulation failed to produce ventricular tachyarrhythmias in any animal before lidocaine administration ( 3 mg/kg ) , while after lidocaine administration , programmed stimulation produced nonsustained ventricular tachycardia in four animals ( 25 % ) , sustained ventricular tachycardia in nine animals ( 56 % ) , and ventricular fibrillation in one animal ( 6 % ) .
C0023660
lidocaine
C0042510
ventricular fibrillation