Document Detail

Body surface distributions of ST segment changes after exercise in effort angina pectoris without myocardial infarction.
MedLine Citation:
PMID:  4061269     Owner:  NLM     Status:  MEDLINE    
To investigate the sites of exercise-induced ST segment changes on the body surface in effort angina pectoris without myocardial infarction, we performed 87-lead ECG mapping in 61 patients before and 1.5 and 5 minutes after treadmill exercise. ST segment depression most often occurred in the left anterior chest leads and ST segment elevation developed mainly in the right upper chest leads. There was a good correlation between the number of lead points that showed ST segment depression (nSTd) and the number of those that showed ST segment elevation (nSTe) 1.5 minutes after exercise (r = 0.92). From 1.5 to 5 minutes after exercise, changes in nSTd for individual patients correlated well with changes in nSTe (r = 0.89). It was suggested that the ST segment elevation observed in this study directly reflected the subendocardial ischemia of the left ventricle. In patients with one-vessel disease (n = 32), there was wide overlap in the sites of ST segment changes among patients with left anterior descending artery disease (n = 19), those with left circumflex artery disease (n = 6), and those with right coronary artery disease (n = 7). These findings should lead to a better understanding of exercise-induced ST segment changes for the diagnosis of coronary artery disease.
I Kubota; K Ikeda; T Ohyama; M Yamaki; S Kawashima; A Igarashi; K Tsuiki; S Yasui
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American heart journal     Volume:  110     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1985 Nov 
Date Detail:
Created Date:  1985-12-04     Completed Date:  1985-12-04     Revised Date:  2006-02-27    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  949-55     Citation Subset:  AIM; IM    
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MeSH Terms
Angina Pectoris / physiopathology*
Angina, Unstable / complications,  physiopathology*
Coronary Vessels / pathology
Electrocardiography / methods
Exercise Test*
Heart Conduction System / physiopathology*
Middle Aged
Surface Properties
Time Factors

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

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