Document Detail


Significance of abnormal root mean square voltages in signal averaged electrocardiogram as a reliable predictor of sustained ventricular tachycardia.
MedLine Citation:
PMID:  9817218     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The late potential is useful to predict patients with sustained ventricular tachycardia (VT). However, because positive predictive value for sustained VT is low, the validity of late potential for screening the patients to be studied by electrophysiological tests was not high. We examined 923 cases, including 63 cases of sustained VT. When we separated patients showing abnormal values of the root mean square voltage of the QRS end part 40 milliseconds (RMS40) into four groups, there was a tendency of a higher incidence of sustained VT with lower value of RMS40. When we conducted electrophysiological tests on 121 cases without sustained VT, it turned out a high induction rate of sustained VT in patients with low RMS40 values (RMS40 < 10 microV, 67%; < 20 microV, 30%; 20 microV, < or = 5%). We conclude abnormally low value (less than 10 microV) of RMS40 can be useful for screening the late potential-positive cases who are high risk for inducible sustained VT.
Authors:
T Tejima; H Sakurada; H Okazaki; T Motomiya; M Hiraoka
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  31     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  1998 Oct 
Date Detail:
Created Date:  1999-01-21     Completed Date:  1999-01-21     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  362-6     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Tokyo Metropolitan Hiroo General Hospital, Japan.
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MeSH Terms
Descriptor/Qualifier:
Electrocardiography*
Female
Follow-Up Studies
Humans
Male
Middle Aged
Predictive Value of Tests
Reproducibility of Results
Retrospective Studies
Risk Factors
Tachycardia, Ventricular / diagnosis*,  physiopathology

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


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