Radiofrequency Current Catheter Ablation of Accessory Pathway in Ebstein?s Anomaly and a Review of the Literature

A 16-year-old fema le w ith Ebstein's anomaly adm iııed to the hospital due to paroxysmal supraventricul ar taclıyca rdia (SVT), which is refractory to propafenone. A surface ECG showed a short PR interval and a right posteroseptal preexcitation confinning the diagnosis of Wolff-Parkinson-White's (WPW) syndrome. Orthodromic-, antidromic atrioventricular reentrant ıac h ycardia (AVRT) and atrial fi bri llation were induced by programmed electrical stimulation. Radiofrequency (RF) catheter ablation was performed successfully on posteroseptal s ite above the septal valve at the tricuspid annulus. The patient has been free from arrhythmias dur ing a follow-up period of 9 months. RF ca theter ab la tion of accessory pathway is a curative therapy w ith i ts special difficulties in Ebstein's anomaly. Related literature was reviewed.