RT Journal Article
SR Electronic
T1 Focal Atrial Tachycardia Originating From the Non-Coronary Aortic Sinus
JF Journal of the American College of Cardiology
FD American College of Cardiology
SP 122
OP 131
DO 10.1016/j.jacc.2006.02.053
VO 48
IS 1
A1 Ouyang, Feifan
A1 Ma, Jian
A1 Ho, Siew Yen
A1 Bänsch, Dietmar
A1 Schmidt, Boris
A1 Ernst, Sabine
A1 Kuck, Karl-Heinz
A1 Liu, Shaowen
A1 Huang, He
A1 Chen, Min
A1 Chun, Julian
A1 Xia, Yunlong
A1 Satomi, Kazuhiro
A1 Chu, Huimin
A1 Zhang, Shu
A1 Antz, Matthias
YR 2006
UL http://www.onlinejacc.org/content/48/1/122.abstract
AB Focal Atrial Tachycardia Originating From the Non-Coronary Aortic Sinus: Electrophysiological Characteristics and Catheter AblationFeifan Ouyang, Jian Ma, Siew Yen Ho, Dietmar Bänsch, Boris Schmidt, Sabine Ernst, Karl-Heinz Kuck, Shaowen Liu, He Huang, Min Chen, Julian Chun, Yunlong Xia, Kazuhiro Satomi, Huimin Chu, Shu Zhang, Matthias AntzIn 9 patients with focal atrial tachycardia (AT) originating from the non-coronary aortic sinus (AS), mapping in the aorta demonstrated that an earliest atrial activation preceded the atrial activation at the His bundle (HB) by 12.2 ± 6.9 ms. Also, the His potentials were not found at the successful site in the non-coronary AS. The focal AT was terminated in <8 s with radiofrequency application in all 9 patients. No procedure-related complications occurred. All 9 patients were free of arrhythmias without antiarrhythmic drugs during a follow-up of 9 ± 3 months. In patients with focal AT near the HB region, mapping in the non-coronary AS can improve clinical outcome.Objectives We sought to investigate electrophysiological characteristics and catheter ablation in patients with focal atrial tachycardia (AT) originating from the non-coronary aortic sinus (AS).Background In patients with failed ablation of focal AT near the His bundle (HB) region, an origin from the non-coronary AS should be considered because of the close anatomical relationship.Methods This study included 9 patients with focal AT, in 6 of whom attempted radiofrequency (RF) ablation had previously failed. Activation mapping was performed during tachycardia to identify an earliest activation in the atria and the AS. The aortic root angiography was performed to identify the origin in the AS before RF ablation.Results Focal AT was reproducibly induced by atrial pacing. Mapping in atria demonstrated that the earliest atrial activation was located at the HB region, whereas mapping in the non-coronary AS demonstrated that an earliest atrial activation preceded the atrial activation at the HB by 12.2 ± 6.9 ms and was anatomically located superoposterior to the HB in all 9 patients. Also, His potentials were not found at the successful site in the non-coronary AS in all 9 patients. The focal AT was terminated in <8 s in all 9 patients. Junctional beats and PR prolongation did not occur during RF application in all 9 patients. No complications occurred in any of the nine patients. All 9 patients were free of arrhythmias without antiarrhythmic drugs during a follow-up of 9 ± 3 months.Conclusions In patients with focal AT near the HB region, mapping in the non-coronary AS can improve clinical outcome.