| Ablation of left atrial tachycardia with cycle length alternans after atrial fibrillation ablation: significance of fractionated electrogram mapping. | |
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MedLine Citation:
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PMID: 21168148 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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INTRODUCTION: Atrial tachycardia (AT) with cycle length alternans occurring after atrial fibrillation ablation has not been previously described. METHODS: Among 66 patients with left AT, stable AT with 2 alternating cycles was registered in 5 cases. Activation mapping of both alternating cycles was performed in all 5 patients. Entrainment and fractionated electrogram mappings were also carried out. RESULTS: Among 10 AT cycles, activation maps suggested underlying mechanism of 5 cycles (50%) in 3 patients. Entrainment pacing was helpful in 2 patients (confirmed mechanism of 2 AT cycles). Catheter ablation successfully terminated AT in all 5 patients: ablation of sites with fractionated potentials in 4 patients and mitral isthmus ablation in 1 patient. CONCLUSION: Consecutive activation mapping of both AT cycles is feasible for mechanism determination in some patients. The results of our small study suggest that fractionated electrogram-guided ablation might be a reasonable approach for termination of this type of AT. |
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Authors:
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Evgeny Mikhaylov; Tamas Szili-Torok; Mikhail Abramov; Dmitry Lebedev |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2010-12-17 |
Journal Detail:
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Title: Journal of electrocardiology Volume: - ISSN: 1532-8430 ISO Abbreviation: - Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0153605 Medline TA: J Electrocardiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2010 Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Electrophysiology and Cardiac Pacing, Almazov Federal Heart, Blood and Endocrinology Centre, Saint-Petersburg, Russian Federation. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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