Document Detail


Assessment of regional left ventricular relaxation in patients with coronary artery disease: importance of geometric factors and changes in wall thickness.
MedLine Citation:
PMID:  6697457     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To assess local myocardial relaxation abnormalities in patients with coronary artery disease, local myocardial left ventricular wall stress was computed in nine normal subjects and in 22 patients with coronary artery disease. In normal left ventricles, the rate of decrease in isovolumic local stress was not significantly different from the rate of decrease in isovolumic pressure, and the residual wall stress at the end of isovolumic relaxation was uniformly low. In patients with coronary artery disease, the residual wall stress was increased both in infarcted areas and in non-infarcted areas perfused by stenosed arteries (43 +/- 31 and 30 +/- 19 kdyne/cm2, respectively, vs 9 +/- 5 kdyne/cm2 in normal areas; p less than .001). The rate of decrease in local stress in infarcted areas paralleled the rate of decrease in pressure (48 vs 49 msec; NS), but in ischemic areas the rate of decrease in stress was significantly slower than the rate of decrease in pressure (69 +/- 35 vs 48 +/- 15 msec; p less than .05). It is concluded that in patients with coronary artery disease, indexes based only on the analysis of decreases in isovolumic pressure underestimate the severity of local impairments in relaxation rate and cannot be used to predict the level of residual diastolic wall stress.
Authors:
H Pouleur; M F Rousseau; C van Eyll; A A Charlier
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Circulation     Volume:  69     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1984 Apr 
Date Detail:
Created Date:  1984-04-24     Completed Date:  1984-04-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  696-702     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Coronary Disease / physiopathology*
Heart Ventricles / drug effects,  physiopathology*
Humans
Middle Aged
Muscle Relaxation
Nicardipine
Nifedipine / analogs & derivatives,  pharmacology
Chemical
Reg. No./Substance:
21829-25-4/Nifedipine; 55985-32-5/Nicardipine

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


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