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Atrial tachycardia originating from the noncoronary aortic cusp and musculature connection with the atria: Relevance for catheter ablation

2006; Elsevier BV; Volume: 3; Issue: 12 Linguagem: Inglês

10.1016/j.hrthm.2006.08.026

1556-3871

Takumi Yamada, José F. Huizar, Hugh T. McElderry, G. Neal Kay,

Cardiac pacing and defibrillation studies

Radiofrequency (RF) catheter ablation is effective and safe in eliminating atrial tachycardia (AT) originating from either the right atrium (RA) or the left atrium (LA). 1 Walsh E.P. Saul J.P. Hulse J.E. Rhodes L.A. Hordof A.J. Mayer J.E. Lock J.E. Transcatheter ablation of ectopic atrial tachycardia in young patients using radiofrequency current. Circulation. 1992; 86: 1138-1146 Crossref PubMed Scopus (282) Google Scholar , 2 Lesh M.D. Van Hare G.F. Epstein L.M. Fitzpatrick A.P. Scheinman M.M. Lee R.J. Kwasman M.A. Grogin H.R. Griffin J.C. Radiofrequency catheter ablation of atrial arrhythmias Results and mechanisms. Circulation. 1994; 89: 1074-1089 Crossref PubMed Scopus (450) Google Scholar It has been reported that some ATs originating in close proximity to the AV node with the potential risk of inadvertent AV block during catheter ablation were safely eliminated by RF deliveries from the noncoronary cusp. 3 Tada H. Naito S. Miyazaki A. Oshima S. Nogami A. Taniguchi K. Successful catheter ablation of atrial tachycardia originating near the atrioventricular node from the noncoronary sinus of Valsalva. Pacing Clin Electrophysiol. 2004; 27: 1440-1443 Crossref PubMed Scopus (54) Google Scholar , 4 Ouyang F. Ma J. Ho S.Y. Bansch D. Schmidt B. Ernst S. Kuck K.H. Liu S. Huang H. Chen M. Chun J. Xia Y. Satomi K. Chu H. Zhang S. Antz M. Focal atrial tachycardia originating from the non-coronary aortic sinus: electrophysiological characteristics and catheter ablation. J Am Coll Cardiol. 2006; 48: 122-131 Abstract Full Text Full Text PDF PubMed Scopus (149) Google Scholar We report the detailed electrophysiologic characterization of an AT originating in the noncoronary cusp of the aorta with complex conduction between the RA and LA.