Document Detail

Effect of exercise on indices of valvular aortic stenosis.
MedLine Citation:
PMID:  1571986     Owner:  NLM     Status:  MEDLINE    
Changes in the physiologic state of the patient may affect indices of valvular aortic stenosis. We determined the effects of supine exercise on the Gorlin valve area, Cannon valve area, aortic valve resistance, and a modified stroke work loss index in 80 patients with aortic stenosis. Exercise caused a significant increase in the Gorlin and Cannon valve area, while work loss and valve resistance decreased significantly. The average percent change in work loss, 12.2%, was lower than the other indices (P less than 0.02), i.e., 15.3% for valve resistance, 18.6% for the Gorlin area, and 19.3% for the Cannon area. The correlation between the rest and exercise measurements was highest for work loss (r = 0.94), compared to 0.93, 0.88, and 0.89 for the other 3 indices, respectively. In patients with a Gorlin area below 1 cm2, exercise caused a significant decrease in work loss, but not Cannon area or valve resistance. However, the percent change was significantly lower and the correlation was better with the work loss index. We conclude that the work loss index is less affected by supine exercise than other indices of aortic stenosis.
T W Martin; J M Moody; J J Bird; D Slife; J P Murgo
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Catheterization and cardiovascular diagnosis     Volume:  25     ISSN:  0098-6569     ISO Abbreviation:  Cathet Cardiovasc Diagn     Publication Date:  1992 Apr 
Date Detail:
Created Date:  1992-06-04     Completed Date:  1992-06-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7508512     Medline TA:  Cathet Cardiovasc Diagn     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  265-71     Citation Subset:  IM    
Cardiology Service, Brooke Army Medical Center, Fort Sam Houston, Texas.
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MeSH Terms
Aortic Valve / physiopathology
Aortic Valve Stenosis / physiopathology*
Exercise Test*
Heart Catheterization*
Hemodynamics / physiology*
Middle Aged

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

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