Document Detail

Reproducibility of symptom-limited exercise-stress testing performed 2 and 6 weeks after myocardial infarction.
MedLine Citation:
PMID:  1506811     Owner:  NLM     Status:  MEDLINE    
To assess the reproducibility of variables with prognostic value from exercise testing, two symptom-limited treadmill exercise tests were performed in 76 consecutive patients at 2 weeks (predischarge) and 6 weeks after myocardial infarction. In addition, cardiac catheterization was performed at 6 weeks. Exercise duration showed a moderate increase from 7.9 +/- 4.4 min to 8.8 +/- 3.0 min (NS). The rate-pressure product increased from 22,377 +/- 5491 to 24,832 +/- 7261 (P less than 0.001). Reproducibility of ST-segment depression was dependent on the initial response: among the group of 25 patients with ST-segment depression at 2 weeks, only 13 (52%) patients had a reproducible result, whereas among the group of 51 patients without initial ST-segment depression, 40 (78%) patients showed reproducibility. There was no difference in coronary anatomy or ejection fraction between the groups with and without reproducibility results. Among the 30 patients with initial ST-segment elevation, 15 (50%) patients showed reproducibility, while among the 46 patients without initial ST-segment elevation, 42 (91%) patients showed reproducibility: the ejection fraction was significantly higher in the latter group than in the group of patients with lower reproducibility. Thus predischarge exercise testing in postinfarction patients identifies a different group of patients at risk compared to exercise testing after 6 weeks, due to considerable variation between the two tests.
C C De Cock; F C Visser; J P Roos; M J Van Eenige
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of internal medicine     Volume:  232     ISSN:  0954-6820     ISO Abbreviation:  J. Intern. Med.     Publication Date:  1992 Aug 
Date Detail:
Created Date:  1992-09-24     Completed Date:  1992-09-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8904841     Medline TA:  J Intern Med     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  147-54     Citation Subset:  IM    
Department of Cardiology, Free University Hospital, Amsterdam, The Netherlands.
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MeSH Terms
Exercise Test*
Middle Aged
Myocardial Infarction / physiopathology*
Reproducibility of Results
Time Factors

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