Radiofrequency catheter ablation successfully cured polymorphic ventricular tachycardia originating from the right ventricular outflow tract, with no recurrence over 18 months.
Case Report (n=1)
No
Does radiofrequency catheter ablation prevent recurrence of polymorphic ventricular tachycardia/ventricular fibrillation in a patient without organic heart disease?
Radiofrequency catheter ablation targeting the triggering PVC in the RV outflow tract successfully prevented recurrence of PVT/VF in a patient without organic heart disease.
We describe a patient with polymorphic ventricular tachycardia (PVT)/ventricular fibrillation (VF) without organic heart disease who was cured by radiofrequency catheter ablation. The patient was a 65-year-old woman with a 10-year history of recurrent syncope. There was no evidence of organic heart disease, and the QT interval during sinus rhythm was borderline normal (corrected QT interval = 0.45 sec1/2). ECG recording during syncope showed PVT. On one occasion, PVT degenerated into VF. This PVT was always induced by a premature ventricular complex (PVC) originating from the right ventricular (RV) outflow tract. Rapid pacing (220 beats/min) at the site of PVC origin reproduced polymorphic change of the QRS wave on surface ECG that was similar to PVT. This suggests that the PVT originated from a single focus in the RV outflow tract. Catheter ablation was performed at the site of PVC origin. During 18-month follow-up, PVT/VF was not documented.
Kusano et al. (Thu,) conducted a case report in Polymorphic ventricular tachycardia (PVT)/ventricular fibrillation (VF) (n=1). Radiofrequency catheter ablation was evaluated on Documentation of PVT/VF during follow-up. Radiofrequency catheter ablation successfully cured polymorphic ventricular tachycardia originating from the right ventricular outflow tract, with no recurrence over 18 months.