Document Detail

Avoiding inappropriate ventricular tachycardia detection due to T-wave oversensing in an implantable cardioverter defibrillator: a novel application of the electrogram width criterion.
MedLine Citation:
PMID:  11271957     Owner:  NLM     Status:  MEDLINE    
Appropriate sensing is an essential function of an implantable cardioverter defibrillator (ICD). T-wave oversensing by an ICD can be a serious problem in some patients, causing overestimation of the heart rate, inappropriate tachyarrhythmia detection and therapy delivery. Decreasing the sensitivity or programming longer refractory periods can sometimes overcome T-wave oversensing, but these measures may interfere with the ability of the ICD to correctly detect tachyarrhythmias. This report proposes a novel application of the electrogram (EGM) width criterion using a recently introduced detection enhancement algorithm intended to improve the specificity of ventricular tachycardia detection, to avoid T-wave oversensing. Based on the course of a case with persistent T-wave oversensing and review of previously published reports, oversensing problems in ICDs and management strategies are discussed.
F Duru; U Bauersfeld; R Candinas
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology     Volume:  3     ISSN:  1099-5129     ISO Abbreviation:  Europace     Publication Date:  2001 Jan 
Date Detail:
Created Date:  2001-02-22     Completed Date:  2001-05-03     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100883649     Medline TA:  Europace     Country:  England    
Other Details:
Languages:  eng     Pagination:  80-4     Citation Subset:  IM    
Cardiac Arrhythmia Unit, University Hospital of Zurich, Raemistr 100, CH-8091, Zurich, Switzerland.
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MeSH Terms
Defibrillators, Implantable*
Diagnosis, Differential
Electric Countershock / instrumentation*
Electrocardiography / methods*
Heart Rate
Middle Aged
Tachycardia, Ventricular / diagnosis*,  physiopathology

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

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