Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials 1. A 48-year-old male with complex congenital heart disease (CCHD) and reduced LVEF, with the presence of frequent ventricular extrasystoles (VE) from the right ventricular outflow tract (RVOT), which is why he was taken to radiofrequency catheter ablation. The aim of the authors is to describe the technique of ablation of VE of the RV outflow tract in complex congenital heart disease.

Arrhythmogenic cardiopathy is a genetic disease that mainly affects young men and mainly involves the right ventricle. It is responsible for up to 25% of sudden deaths in children under 35 years of age [1]. To make its diagnosis, certain criteria are required, such as the characteristic electrocardiographic alterations in sinus rhythm, the presence of documented ventricular tachycardia and structural abnormalities especially in the right ventricle [2]. We present the case of a 25-year-old male patient with a confirmed diagnosis of arrhythmogenic cardiopathy who underwent ablation with a ventricular tachycardia catheter with an endocardial -epicardial approach.