Document Detail


Long-term outcome following successful catheter ablation of atrial tachycardia originating from the pulmonary veins: absence of late atrial fibrillation.
MedLine Citation:
PMID:  20132395     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: This study aimed to characterize the long-term outcome and incidence of atrial fibrillation (AF) in patients following catheter ablation of focal atrial tachycardia (AT) from the pulmonary veins (PV). BACKGROUND: Although both AT and AF may originate from ectopic foci within PVs, it is unknown whether PV AT patients subsequently develop AF. METHODS: Twenty-eight patients with 29 PV ATs (14%) from a consecutive series of 194 patients who underwent RFA for focal AT were included. Patients with concomitant AF prior to the index procedure were excluded. RESULTS: The minimum follow-up duration was 4 years; mean age 38 +/- 18 years with symptoms for 6.5 +/- 10 years, having tried 1.5 +/- 0.9 antiarrhythmic drugs. The distribution of foci was: left superior 12 (41%), right superior 10 (34%), left inferior 5 (17%), and right inferior 2 (7%). The focus was ostial in 93% and 2-4 cm distally within the vein in 7%. Mean tachycardia cycle length was 364 +/- 90 ms. Focal ablation was performed in 25 of 28 patients. There were 6 recurrences with 5 from the original site. Twenty-six patients were available for long-term clinical follow-up. At a mean of 7.2 +/- 2.1 years, 25 of 26 (96%) were free from recurrence off antiarrhythmic drugs. No patients developed AF. CONCLUSIONS: Focal ablation for tachycardia originating from the PVs is associated with long-term freedom from both AT and AF. Therefore, although PV AT and PV AF share a common anatomic distribution, PV AT is a distinct clinical entity successfully treated with focal RFA and not associated with AF in the long term.
Authors:
Andrew W Teh; Jonathan M Kalman; Caroline Medi; Raphael Rosso; Richard Balasubramaniam; Geoffrey Lee; Karen Halloran; Paul B Sparks; Joseph B Morton; Jitendra K Vohra; Peter M Kistler
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-02-01
Journal Detail:
Title:  Journal of cardiovascular electrophysiology     Volume:  21     ISSN:  1540-8167     ISO Abbreviation:  J. Cardiovasc. Electrophysiol.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-07-26     Completed Date:  2010-11-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010756     Medline TA:  J Cardiovasc Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  747-50     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Royal Melbourne Hospital and the Department of Medicine, University of Melbourne, Melbourne, Australia.
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MeSH Terms
Descriptor/Qualifier:
Adult
Atrial Fibrillation / etiology*,  physiopathology
Catheter Ablation / adverse effects*
Electrocardiography
Electrophysiologic Techniques, Cardiac
Female
Humans
Male
Middle Aged
Pulmonary Veins / physiopathology,  surgery*
Risk Assessment
Risk Factors
Tachycardia, Supraventricular / diagnosis,  physiopathology,  surgery*
Time Factors
Treatment Outcome
Victoria
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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