Radiofrequency catheter ablation of idiopathic ventricular tachycardia originating from the mitral annulus

Idiopathic ventricular tachycardias (VT) originate mostly from the right ventricular outflow tract and rarely from the mitral annulus. Herein, we present a 20-year-old male patient in whom we performed a successful radiofrequency catheter ablation of mitral annular VT. He admitted to our department with the complaints of palpitations and shortness of breath attacks for 5 years. Detailed assessment disclosed idiopathic VT which subsequently was found to be derived from the mitral annulus in electrophysiologic study. The patient’s symptoms disappeared after successful RF ablation and the follow-up Holter ECG was totally normal.

Keywords: Catheter ablation, electrocardiography, ambulatory; electrophysiologic techniques, cardiac; heart conduction system; heart ventricles; tachycardia, ventricular