Epicardial mapping and radiofrequency catheter ablation of ischemic ventricular tachycardia using a three-dimensional nonfluoroscopic mapping system

Electroanatomic Mapping and Epicardial Ablation of VT. Endocardial radiofre quency catheter ablation of ischemic left ventricular tachycardia has been of variable success due to multiple factors. Two such factors include the l ocation of the reentrant circuit in the deep myocardium or on the epicardia l surface and the inherent limitations of fluoroscopy as a guide for target localization. We report a patient in whom successful epicardial mapping an d radiofrequency catheter ablation of an ischemic left ventricular tachycar dia was performed using pericardial access and the CARTO electroanatomic ma pping system.