2 CASES OF VENTRICULAR PARASYSTOLE ASSOCIATED WITH VENTRICULAR-TACHYCARDIA

In two patients, ventricular parasystole (VP) was associated with vent ricular tachycardia (VT), and in one patient, catheter ablation was su ccessful. In patient 1, with dilated cardiomyopathy, VP led to VT, whi ch converted to ventricular fibrillation. In patient-2, VP led to symp tomatic nonsustained polymorphic VT. The origin of parasystolic focus was determined by endocardial mapping, and a radiofrequency current wa s delivered to patient 2. Both VP and VT disappeared immediately, and no recurrence has been observed during a follow-up of 8 months. Cathet er ablation to the parasystolic focus was effective and a relationship between VP and VT was strongly suggested.