Document Detail


Fragmented QRS and other depolarization abnormalities as a predictor of mortality and sudden cardiac death.
MedLine Citation:
PMID:  19881337     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE OF REVIEW: Several invasive and noninvasive tests for risk stratification of sudden cardiac death (SCD) have been studied. Tests such as microwave T wave alternans (repolarization abnormality) and signal-averaged ECG (depolarization abnormality) have high negative predictive values but low positive predictive values in patients with heart disease. The presence of a fragmented QRS (fQRS) complex on a routine 12-lead ECG is another marker of depolarization abnormality. The purpose of this review is to discuss the potential utility of tests to detect depolarization abnormalities of the heart for the risk stratification of mortality and SCD with main emphasis on fQRS. RECENT FINDINGS: fQRS is associated with increased mortality and arrhythmic events in patients with coronary artery disease. fQRS has also been defined as a marker of arrhythmogenic right ventricular cardiomyopathy and Brugada syndrome. In Brugada syndrome, the presence of fQRS predicts episodes of ventricular fibrillation during follow-up. SUMMARY: fQRS may be of value in determining the risk for SCD and guiding selection for device therapy in patients with structural heart disease and Brugada syndrome. It is possible that the predictive value of fQRS for SCD can be enhanced further by combining a marker of repolarization abnormality such as microwave T wave alternans.
Authors:
Mithilesh K Das; Hicham El Masry
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Current opinion in cardiology     Volume:  25     ISSN:  1531-7080     ISO Abbreviation:  Curr. Opin. Cardiol.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2009-12-09     Completed Date:  2010-02-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8608087     Medline TA:  Curr Opin Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  59-64     Citation Subset:  IM    
Affiliation:
Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA. midas@iupui.edu
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MeSH Terms
Descriptor/Qualifier:
Arrhythmias, Cardiac / etiology
Death, Sudden, Cardiac / etiology*
Electrocardiogram Pattern / mortality*
Humans
Magnetocardiography
Predictive Value of Tests
Risk Factors

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


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