Document Detail

Diagnostic value of R wave amplitude changes during exercise testing after myocardial infarction.
MedLine Citation:
PMID:  3769958     Owner:  NLM     Status:  MEDLINE    
To determine the diagnostic value of R wave amplitude changes occurring during exercise testing after myocardial infarction, exercise ECG's and coronary angiograms were reviewed in 76 postinfarction patients and in 40 patients with normal coronary arteries. During exercise, an increase in R wave amplitude (mean: + 2.7 +/- 1.3 mm) was observed in the postinfarction patients, significantly different (P less than 0.001) from the decrease (mean: - 2.6 +/- 1.1 mm) observed in the group with normal coronary arteries. Although this change increased with the number of diseased coronary arteries, the difference between 1-vessel and multi- or 3-vessel disease was not significant. Extension of infarct size from one to more akinetic segments on the left ventricular angiogram was associated with a significant (P less than 0.001) increase of the R wave amplitude change during exercise (mean: + 1.6 +/- 1.1 vs 3.3 +/- 1.3 mm). It is concluded that the abnormal increase in R wave amplitude observed during exercise testing after myocardial infarction is more strongly related to infarct size then to the number of diseased coronary arteries. Furthermore exercise induced R wave amplitude changes have no diagnostic value in the prediction of multi- or 3-vessel disease in postinfarction patients.
S De Hert; C Vrints; E Vanagt; J Snoeck
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European heart journal     Volume:  7     ISSN:  0195-668X     ISO Abbreviation:  Eur. Heart J.     Publication Date:  1986 Sep 
Date Detail:
Created Date:  1986-12-05     Completed Date:  1986-12-05     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  760-4     Citation Subset:  IM    
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MeSH Terms
Exercise Test
Heart Catheterization
Myocardial Infarction / physiopathology*

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