59 patients , 50 male , 9 female ( age 33 to 81 years ) entered the study with ventricular tachycardia ( vt , 68 % ) , wpw-tachycardia ( 12 % ) , non-sustained vt ( 12 % ) or untreatable paroxysmal atrial fibrillation or supraventricular tachycardia ( 8 % ) .
C0039231
tachycardia
C0039240
supraventricular tachycardia