Document Detail

T-wave oversensing and inappropriate shocks: a case report.
MedLine Citation:
PMID:  18442965     Owner:  NLM     Status:  MEDLINE    
A 27-year-old male with congenital long QT syndrome, SCN5A mutation experienced recurrent inappropriate exercise-related implantable cardioverter defibrillator (ICD) shocks. This device showed T-wave oversensing with double, which lead to these device discharges. Dynamic T-wave oversensing was reproducibly provoked at exercise treadmill testing and was confirmed as the mechanism leading to double counting. The insertion of a new pacing and sensing lead with increased R-wave amplitude did not solve the problem. Exchanging the existing ICD generator with one capable of automatic sensitivity control (Biotronik, Lexos DR, Biotronik, Berlin, Germany) completely eliminated T-wave oversensing and inappropriate shocks.
Komandoor Srivathsan; Luis R Scott; Gregory T Altemose
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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:  10     ISSN:  1532-2092     ISO Abbreviation:  Europace     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-04-29     Completed Date:  2008-05-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883649     Medline TA:  Europace     Country:  England    
Other Details:
Languages:  eng     Pagination:  552-5     Citation Subset:  IM    
Mayo Clinic Arizona-Mayo Clinic Hospital, Cardiovascular Diseases, 5777 East Mayo Boulevard, Phoenix, AZ 85054, USA.
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MeSH Terms
Defibrillators, Implantable / adverse effects*
Electric Injuries / etiology*,  prevention & control*
Electrocardiography / adverse effects*
Equipment Failure*

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

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