however , multiple morphologies of ventricular tachycardia ( pleomorphism ) were induced more frequently in patients with subsequent recurrence of ventricular tachycardia ( off drugs : 9 of 13 , 69 % , on drugs : 14 of 23 , 61 % ) than in patients without ( off drugs : 4 of 10 , 40 % , on drugs : 2 of 11 , 18 % ) ( p less than 0.05 ) .
C0039231
tachycardia
C0042514
ventricular tachycardia