| Catheter ablation of atypical atrial flutter and atrial tachycardia within the coronary sinus after left atrial ablation for atrial fibrillation. | |
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MedLine Citation:
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PMID: 15992640 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: The goal of this study was to describe the prevalence and ablation of coronary sinus (CS) arrhythmias after left atrial ablation for atrial fibrillation (AF). BACKGROUND: The CS has been implicated in a variety of supraventricular arrhythmias. METHODS: Thirty-eight patients underwent mapping and ablation of atypical flutter that developed during (n = 5) or after (n = 33) ablation for AF. Also included were two patients with focal CS arrhythmias that occurred during an AF ablation procedure. A tachycardia was considered to be originating from the CS if the post-pacing interval in the CS matched the tachycardia cycle length and/or if it terminated during ablation in the CS. RESULTS: Among the 33 patients who developed atypical flutter late after AF ablation, 9 (27%) were found to have a CS origin. Overall, 16 of the 40 patients in this study had a CS arrhythmia. The tachycardia was macro-re-entrant in 14 patients (88%) and focal in two patients. Radiofrequency ablation with an 8-mm-tip catheter was successful in 15 patients (94%) without complication. In eight patients (50%), > or = 45 W was required for successful ablation. Thirteen of the 15 patients (87%) with a successful ablation acutely remained arrhythmia-free during 5 +/- 5 months of follow-up. CONCLUSIONS: The musculature of the CS serves as a critical component of the re-entry circuit in approximately 25% of patients with atypical flutter after ablation for AF. The CS may also generate focal atrial arrhythmias that may play a role in triggering and/or maintaining AF. Catheter ablation of these arrhythmias in the CS can be performed safely. |
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Authors:
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Aman Chugh; Hakan Oral; Eric Good; Jihn Han; Kamala Tamirisa; Kristina Lemola; Darryl Elmouchi; David Tschopp; Scott Reich; Petar Igic; Frank Bogun; Frank Pelosi; Fred Morady |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American College of Cardiology Volume: 46 ISSN: 0735-1097 ISO Abbreviation: J. Am. Coll. Cardiol. Publication Date: 2005 Jul |
Date Detail:
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Created Date: 2005-07-04 Completed Date: 2005-07-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8301365 Medline TA: J Am Coll Cardiol Country: United States |
Other Details:
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Languages: eng Pagination: 83-91 Citation Subset: AIM; IM |
Affiliation:
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Division of Cardiology, University of Michigan Hospitals, Ann Arbor, Michigan, USA. achugh@umich.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Arrhythmia, Sinus
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etiology*,
physiopathology,
surgery* Atrial Fibrillation / surgery* Catheter Ablation / adverse effects* Electrocardiography Female Follow-Up Studies Humans Male Middle Aged Recurrence Sinoatrial Node / physiopathology*, surgery* Treatment Outcome |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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