Document Detail


Delayed effects of radiofrequency energy on accessory atrioventricular connections.
MedLine Citation:
PMID:  7685879     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to determine the incidence and characteristics of delayed effects on conduction through accessory atrioventricular (AV) connections after apparently successful attempts at radiofrequency catheter ablation. Among 450 patients who had 471 accessory AV connections, the ablation procedure was unsuccessful in 26 patients (6%), as defined by persistent conduction through the accessory AV connection 60 minutes after the final application of radiofrequency energy. In 6/26 unsuccessfully treated patient (24%), conduction through the accessory AV connection disappeared on a delayed basis. At least once during the ablation procedure, conduction through each of these 6 accessory AV connections was transiently eliminated for 10 seconds to 60 minutes. Five of these accessory AV connections were left-sided and one was posteroseptal; one was concealed and five were manifest. Conduction through the accessory AV connection disappeared on a delayed basis 6-18 hours after the ablation procedure in 4 patients, and at some time between 1-5 days or 1-60 days in the other 2 patients. In 2 patients, the delayed effect was only transient, while in 4 patients, conduction through the accessory AV connections did not return during 5-23 months of follow-up. In conclusion, up to 15% of patients who undergo an apparently unsuccessful attempt at radiofrequency ablation of an accessory AV connection may later manifest a permanent loss of conduction through the accessory AV connection.
Authors:
J J Langberg; S M Borganelli; S J Kalbfleisch; S A Strickberger; H Calkins; F Morady
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  16     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1993 May 
Date Detail:
Created Date:  1993-07-22     Completed Date:  1993-07-22     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1001-5     Citation Subset:  IM    
Affiliation:
University of Michigan Hospitals, Ann Arbor 48109-0022.
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MeSH Terms
Descriptor/Qualifier:
Adult
Catheter Ablation*
Electrocardiography
Female
Heart Conduction System / abnormalities,  physiopathology,  surgery*
Humans
Male
Middle Aged
Wolff-Parkinson-White Syndrome / physiopathology,  surgery

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


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