[Unusual epicardial location of ventricular ectopy in left ventricular outflow tract, cured with RF ablation from the great cardiac vein].

The case report refers to a 54-year-old woman with a drug-refractory premature ventricular contractions (total number of ventricular ectopy: 40,851 beats/24 h) where an ectopy focus was localised in epicardial part of the left ventricular outflow tract. Successful radiofrequency ablation with the open-irrigated-tip catheter was performed at the site of earliest activation in the great cardiac vein.