Document Detail

Significance of ST segment depression in exercise-induced supraventricular extrasystoles.
MedLine Citation:
PMID:  2469329     Owner:  NLM     Status:  MEDLINE    
The significance of exercise-induced ST segment depression in supraventricular extrasystoles (STx), in the preceding sinus beats (STs), as well as the significance of the difference between the two of them (STx-s), was studied in 96 patients with angiographically documented coronary artery disease (CAD) (group A)--34 with myocardial infarction (group A1) and 62 without (group A2)--compared to 37 subjects with normal coronary arteries (group B). All patients had supraventricular extrasystoles during exercise testing, the results of which were positive in 72 (75%) patients in group A and six (16.2%) patients in group B (sensitivity 75%, specificity 84%). Among patients in group A STx was greater than STs (1.7 +/- 1.0 vs 1.2 +/- 0.8 mm; p less than 0.001), and STx-s was positive in 70 (sensitivity 73%), whereas in group A2 there were 44 patients with these values (sensitivity 71%). Among patients in group B no statistically significant difference was found between STx and STx (0.4 +/- 0.6 vs 0.6 +/- 0.7 mm; p = NS), whereas STx-s was positive in three (specificity 92%). Among the 24 patients in group A with false negative results of exercise tests, 15 (62.5%) had a positive STx-s, whereas of the 17 patients in group A2 with false negative results, 10 (58.8%) had a positive STx-s. Among the six patients in group B with false positive exercise test results, the STx-s was positive in two.(ABSTRACT TRUNCATED AT 250 WORDS)
A P Michaelides; G P Vyssoulis; F K Triposkiadis; P V Papadakis; K V Kourouklis; P K Toutouzas
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  American heart journal     Volume:  117     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1989 May 
Date Detail:
Created Date:  1989-06-05     Completed Date:  1989-06-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1035-41     Citation Subset:  AIM; IM    
University Cardiac Unit, Hippokrateion Hospital, Athens, Greece.
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MeSH Terms
Cardiac Complexes, Premature / etiology,  physiopathology*
Coronary Disease / complications,  diagnosis,  physiopathology*
Exercise Test* / standards
Heart Ventricles
Middle Aged
Sensitivity and Specificity

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