Document Detail

Value of ventricular electrogram recordings in the diagnosis of arrhythmias precipitating electrical device shock therapy.
MedLine Citation:
PMID:  1999638     Owner:  NLM     Status:  MEDLINE    
An antitachycardia pacemaker-cardioverter-defibrillator that is capable of storing ventricular electrograms before and after delivery of device shock therapy was implanted in 16 patients. Three of the patients experienced out-of-hospital device shock therapy preceded by minimal symptoms. Although limitations of electrogram analysis exist and are discussed, careful analysis and registration of electrograms during all supraventricular and ventricular rhythms observed during in-hospital testing served as an important reference for subsequent arrhythmia diagnosis. By analyzing the electrogram rate and RR interval stability and configuration, a definitive diagnosis was established in all three patients (atrial fibrillation, polymorphic ventricular tachycardia and rate-sensing lead disruption, respectively). Thus, the ability to store ventricular electrograms before shock therapy represents a major advance in the management of patients who receive an electrical device to treat ventricular tachyarrhythmia.
B G Hook; F E Marchlinski
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the American College of Cardiology     Volume:  17     ISSN:  0735-1097     ISO Abbreviation:  J. Am. Coll. Cardiol.     Publication Date:  1991 Mar 
Date Detail:
Created Date:  1991-04-09     Completed Date:  1991-04-09     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8301365     Medline TA:  J Am Coll Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  985-90     Citation Subset:  AIM; IM    
Clinical Electrophysiology Laboratory, Hospital of the University of Pennsylvania, Philadelphia 19104.
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MeSH Terms
Atrial Fibrillation / diagnosis*
Electric Countershock / instrumentation*
Electrodes, Implanted
Equipment Design
Equipment Failure
Prostheses and Implants*
Tachycardia / diagnosis*,  therapy*
Tachycardia, Supraventricular / diagnosis
Grant Support

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

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