Document Detail


Abnormalities of the S-T segment--Part I.
MedLine Citation:
PMID:  9181260     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The usual normal S-T segment of the surface electrocardiogram (ECG) contributes little to the diagnostic procedure. When the S-T segment is too long or too short, or when it is displaced upward or downward, it is commonly abnormal. Under such circumstances, an S-T segment abnormality usually contributes considerable diagnostic information. When the Grant method of ECG interpretation is used, it is possible to perceive abnormalities of the S-T segment that may otherwise be ignored or misinterpreted. This paper describes the method of identification and the significance of primary and secondary S-T segment abnormalities. When a mean vector constructed for the S-T segment displacement seen in 12 ECG leads is relatively parallel with a mean vector representing the T wave, it is, with a few exceptions, part of the repolarization process and is therefore part of the T wave. This may be called a secondary S-T segment abnormality. When a mean vector constructed for the S-T segment displacement seen in 12 ECG leads is not relatively parallel with a mean vector representing the T wave, it is, with a few exceptions, not part of the repolarization process and is therefore not part of the T wave. This may be called a primary S-T segment abnormality.
Authors:
J W Hurst
Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Clinical cardiology     Volume:  20     ISSN:  0160-9289     ISO Abbreviation:  Clin Cardiol     Publication Date:  1997 Jun 
Date Detail:
Created Date:  1997-07-31     Completed Date:  1997-07-31     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  7903272     Medline TA:  Clin Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  511-20     Citation Subset:  IM    
Affiliation:
Emory University School of Medicine, Atlanta, GA 30322, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Electrocardiography / methods*
Heart Conduction System / physiopathology
Heart Diseases / diagnosis*
Humans
Models, Cardiovascular*

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


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