title: Successful radiofrequency catheter ablation of common atrial flutter at the bottom of a coronary sinus diverticulum.
abstract: We describe a patient who underwent radiofrequency (RF) catheter ablation of cavo-tricuspid isthmus-dependent atrial flutter (AFL). Extensive ablation at the isthmus failed to terminate the AFL. A coronary sinus (CS) diverticulum arising from the proximal portion of the middle cardiac vein was found near the isthmus. An RF energy application at the bottom of the CS diverticulum resulted in completion of a bidirectional block line at the isthmus, as well as AFL termination.
authors.affiliation: Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan. miyako-k@tb3.so-net.ne.jp
authors.forename: Miyako
authors.initials: M
authors.lastname: Igarashi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tada
authors.forename: Yukio
authors.initials: Y
authors.lastname: Sekiguchi
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Aonuma
mesh_terms: D000328:Adult; D001282:Atrial Flutter / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D017115:Catheter Ablation; D054326:Coronary Sinus / Q000002:abnormalities / Q000503:physiopathology / Q000601:surgery*; D003330:Coronary Vessel Anomalies / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D004240:Diverticulum / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D004452:Echocardiography; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006801:Humans; D016896:Treatment Outcome