| Atrial tachycardia during ongoing atrial fibrillation ablation. - EnSite array analysis-. | |
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MedLine Citation:
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PMID: 21471672 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Atrial tachycardia (AT) occurring during atrial fibrillation (AF) ablation is sometimes difficult to identify and eliminate. EnSite Array (EA) visualizes beat-to-beat virtual activation of AT. The aim of the present study was to characterize AT occurring during AF ablation during ongoing AF, using EA. METHODS AND RESULTS: Among 90 patients with AF (paroxysmal, n=67; persistent, n=23) who underwent radiofrequency catheter ablation during ongoing AF, 33 (37%) had 46 ATs that developed during ablation, and 9 (10%) of these patients had 9 ATs that developed before ablation. AT was sustained in 39 and non-sustained in 7. Nineteen ATs resulted from a focal mechanism and 27 from macroreentry. The major AT foci were distributed in the pulmonary vein (n = 8) and left atrial roof (n = 3), and macroreentrant ATs mainly consisted of peri-mitral AT (n = 10), common atrial flutter (n = 10), and roof reentrant AT (n = 3). After EA-guided ablation of AT, 41 ATs in 28 patients (85%) were eventually rendered non-inducible. During 21 ± 8 months of follow-up, 30 of the 33 patients (91%) were free from AF/AT recurrence. CONCLUSIONS: AT occurred in 37% of the patients during ongoing AF ablation, resulting from a focal or reentrant mechanism in diverse locations. Peri-mitral AT, common atrial flutter, and AT from the pulmonary vein were frequently observed. These ATs were eliminated by EA-guided radiofrequency ablation in most cases. |
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Authors:
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Yasutsugu Nagamoto; Takeshi Tsuchiya; Koji Miyamoto; Takanori Yamaguchi; Naohiko Takahashi |
Publication Detail:
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Type: Journal Article Date: 2011-04-07 |
Journal Detail:
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Title: Circulation journal : official journal of the Japanese Circulation Society Volume: 75 ISSN: 1347-4820 ISO Abbreviation: Circ. J. Publication Date: 2011 |
Date Detail:
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Created Date: 2011-04-25 Completed Date: 2011-09-29 Revised Date: 2012-01-09 |
Medline Journal Info:
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Nlm Unique ID: 101137683 Medline TA: Circ J Country: Japan |
Other Details:
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Languages: eng Pagination: 1080-9 Citation Subset: IM |
Affiliation:
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First Department of Internal Medicine, Faculty of Medicine, Oita University, Oita, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Atrial Fibrillation
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complications*,
therapy* Catheter Ablation / adverse effects*, methods Humans Pulmonary Veins / physiopathology Tachycardia / etiology* |
| Comments/Corrections | |
Comment In:
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Circ J. 2011;75(5):1049-50
[PMID:
21471670
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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