Radiofrequency Catheter Ablation of a Macroreentrant Ventricular Tachycardia Late After Surgical Repair of Tetralogy of Fallot Using the Electroanatomic Mapping (CARTO)


Address for reprints: Thomas Rostock, M.D., University Hospital Eppendorf, Dept. of Cardiology, Martinistr. 52, D-20246 Hamburg, Germany. Fax: +++ 4940-42803-4125; e-mail:


This case report describes a patient with a sustained monomorphic VT after surgical repair of a tetralogy of Fallot (TOF). In combination with the three-dimensional electroanatomic mapping system, CARTO, and conventional mapping techniques the VT was identified as a macro-reentrant tachycardia circling around the border between pulmonary graft and right ventricular outflow tract (RVOT). A y-shaped ablation line crossing this zone was created. The VT terminated during RF application and was not inducible again. This case underlines the use of a combined conventional and three-dimensional electroanatomic mapping technique can be helpful for catheter ablation of ventricular arrhythmias in TOF patients. (PACE 2004; 27[Pt. I]:801–804)