| Remote-controlled magnetic pulmonary vein isolation using a new irrigated-tip catheter in patients with atrial fibrillation. | |
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MedLine Citation:
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PMID: 20610835 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Lack of an irrigated-tip magnetic catheter has limited the role of remote-controlled magnetic navigation (Niobe II, Stereotaxis) for catheter ablation of atrial fibrillation (AF). METHODS AND RESULTS: A novel 3.5-mm-tip irrigated magnetic catheter (group 1, Thermocool Navistar RMT, Biosense Webster) was used for 3D left atrial reconstruction (CARTO RMT) and remote-controlled magnetic pulmonary vein isolation. A redesigned catheter was used in group 2. The primary end point was wide area circumferential pulmonary vein isolation confirmed by spiral catheter recording during ablation; secondary end points included procedural data, complications, and AF recurrence. Fifty-six consecutive patients [group 1: 28 patients, 22 males, age 64 (38 to 78) years, left atrium: 47 (34 to 52) mm; paroxysmal AF: n=21, persistent AF: n=7; group 2: 28 patients, 20 males, age 60 (24 to 78) years, left atrium: 40 (35 to 53) mm; paroxysmal AF: n=18, persistent AF: n=10] were included. The primary end point was achieved in a total of 52 of 56 (93%) patients. Median procedure duration was 315 (125 to 550) minutes (group 1: 370 [230 to 550] minutes; group 2: 243 [125 to 450] minutes). Median fluoroscopy exposure to the investigator was reduced by 31%. Tip charring in 17 of 28 (61%) and complications in 3 of 28 (11%) patients in group 1 resulted in a catheter redesign. Sinus rhythm was maintained by 35 of 50 (70%) patients during a median follow-up period of 545 (100 to 683) days. CONCLUSIONS: Remote-controlled magnetic AF ablation with real-time verification of pulmonary vein isolation is feasible with a comparable success rate to manual ablation. Safety improved after a redesign of the catheter. |
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Authors:
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K R Julian Chun; Erik Wissner; Buelent Koektuerk; Melanie Konstantinidou; Boris Schmidt; Thomas Zerm; Andreas Metzner; Roland Tilz; Sigrid Boczor; Alexander Fuernkranz; Feifan Ouyang; Karl-Heinz Kuck |
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Publication Detail:
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Type: Comparative Study; Journal Article Date: 2010-07-07 |
Journal Detail:
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Title: Circulation. Arrhythmia and electrophysiology Volume: 3 ISSN: 1941-3084 ISO Abbreviation: Circ Arrhythm Electrophysiol Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-10-20 Completed Date: 2010-11-04 Revised Date: 2012-02-03 |
Medline Journal Info:
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Nlm Unique ID: 101474365 Medline TA: Circ Arrhythm Electrophysiol Country: United States |
Other Details:
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Languages: eng Pagination: 458-64 Citation Subset: IM |
Affiliation:
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Department of Cardiology, Asklepios Klinik St Georg, Hamburg, Germany. jongichun@t-online.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Atrial Fibrillation / physiopathology, surgery* Body Surface Potential Mapping Catheter Ablation / instrumentation* Catheterization, Central Venous / instrumentation* Equipment Design Feasibility Studies Female Heart Conduction System / physiopathology, surgery* Humans Magnetics / methods* Male Middle Aged Pulmonary Veins / innervation, surgery* Telemetry / methods* Therapeutic Irrigation / instrumentation Treatment Outcome |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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