Document Detail

Inappropriate ICD therapy due to proarrhythmic ICD shocks and hyperpolarization.
MedLine Citation:
PMID:  15009877     Owner:  NLM     Status:  MEDLINE    
A 50-year-old man with an ischemic cardiomyopathy underwent ICD implantation for inducible ventricular fibrillation (VF). Sixteen months later he experienced inappropriate ICD therapy due to atrial fibrillation with a rapid ventricular response. The initial shock resulted in the initiation of VF (proarrhythmia) and the patient received an additional shock converting his rhythm to an idioventricular rhythm with a cycle length of 490 ms (122 beats/min). Due to lead hyperpolarization, the device oversensed ventricular events and the patient subsequently received additional shocks.
Edward Healy; Sanjeev Goyal; Clifford Browning; Dionyssis Robotis; Karthick Ramaswamy; Karen Rofino-Nadoworny; Lawrence Rosenthal
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  27     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-03-10     Completed Date:  2004-07-14     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:  415-6     Citation Subset:  IM    
Department of Medicine, UMass Memorial Medical Center, Worcester, Massachusetts 05181, USA.
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MeSH Terms
Atrial Fibrillation / therapy
Defibrillators, Implantable / adverse effects*
Follow-Up Studies
Heart Rate / physiology
Middle Aged
Time Factors
Ventricular Fibrillation / etiology,  therapy

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