Successful Catheter Ablation of Atrial Tachycardia Originating Near the Atrioventricular Node from the Noncoronary Sinus of Valsalva


Address for reprints: Hiroshi Tada, M.D., Div. of Cardiology, Gunma Prefectural Cardiovascular Center, 3-12 Kameizumi, Maebashi, Gunma 371-0004, Japan. Fax: +81-27-269-1492; e-mail:


This report describes a patient who underwent RF catheter ablation of atrial tachycardia. Two applications of RF energy near the His-bundle region transiently terminated the tachycardia. With detailed mapping at the aortic sinus of Valsalva using a retrograde transaortic approach, the earliest atrial activation was found in the noncoronary sinus of Valsalva. Complete elimination of the tachycardia was achieved with RF energy application from this site.