Document Detail

Cardioverter-defibrillator oversensing due to double counting of ventricular tachycardia electrograms.
MedLine Citation:
PMID:  9781795     Owner:  NLM     Status:  MEDLINE    
We report a case of a patient with idiopathic dilated cardiomyopathy and recurrent ventricular tachycardias refractory to antiarrhythmic treatment with amiodarone. A cardioverter defibrillator implantation was performed by the transvenous technique, but ventricular tachycardia detection resulted to be inappropriate because of constant double sensing of ventricular tachycardia electrograms (QRS width=250 ms). Device programmability didn't allow a satisfactory solution to this problem, therefore a more appropriate sensing system was considered. Through an anterior thoracotomy two epicardial wires were positioned and sensing by these wires, placed closer to ventricular tachycardia origin, resulted appropriate. An electrophysiologic study and subsequent follow up confirmed appropriate ICD detection of ventricular tachycardias. This case emphasizes how in some cases sensing by epicardial wires may be a solution for QRS double counting occurring with endocardial leads during ventricular tachycardia.
G Boriani; M Biffi; L Frabetti; M Parlapiano; R Galli; A Branzi; B Magnani
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  International journal of cardiology     Volume:  66     ISSN:  0167-5273     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  1998 Sep 
Date Detail:
Created Date:  1998-12-16     Completed Date:  1998-12-16     Revised Date:  2006-07-12    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  91-5     Citation Subset:  IM    
Institute of Cardiology, Policlinico S. Orsola, University of Bologna, Italy.
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MeSH Terms
Defibrillators, Implantable*
Equipment Failure
Middle Aged
Tachycardia, Ventricular / diagnosis*

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

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