Document Detail

Inappropriate ICD therapy due to lead-related noise in an active fixation ICD lead.
MedLine Citation:
PMID:  11385158     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: Despite advances in technology, problems with effective ventricular endocardial sensing continue to arise and to result in inappropriate implantable cardioverter defibrillator (ICD) therapies. METHODS AND RESULTS: The patient is a 79-year-old man with ischemic cardiomyopathy and ventricular tachycardia (VT) who received inappropriate ICD therapies due to lead-related noise detection. Noise was created by the distal helix, which was not fully deployed, intermittently contacting the internal guidepost of the lead (CPI, Guidant, model 0155). After the complete deployment of the helix the problem resolved and the pacing parameters remained stable. CONCLUSION: To our knowledge, this is the first confirmed case report of non-physiologic sensing secondary to the incompletely deployed helix of an active fixation defibrillation lead. A design flaw with this lead led to its redesign to avoid noise over-sensing.
T Mela; T Ngarmukos; L Rosenthal; R Mittleman
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  The Journal of invasive cardiology     Volume:  13     ISSN:  1042-3931     ISO Abbreviation:  J Invasive Cardiol     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-05-31     Completed Date:  2001-08-02     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8917477     Medline TA:  J Invasive Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  406-8     Citation Subset:  IM    
Cardiac Arrhythmia Service, Massachusetts General Hospital, 75 Fruit Street, Boston, MA 02114, USA.
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MeSH Terms
Arrhythmias, Cardiac / complications,  therapy
Defibrillators, Implantable / adverse effects*
Tachycardia, Ventricular / etiology

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

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