Document Detail

Protective role of collaterals in patients with coronary artery occlusion.
MedLine Citation:
PMID:  6885187     Owner:  NLM     Status:  MEDLINE    
We reviewed the clinical, hemodynamic and angiographic data of 105 patients with right coronary artery occlusion and 82 patients with left anterior descending coronary artery occlusion, subdivided into 3 groups by the presence and quality of collaterals to the occluded coronary (absent, poor or good collaterals). We found that patients with right coronary artery occlusion and good collaterals had a lower frequency of diaphragmatic myocardial infarction (60%) than patients with absent collaterals (100%) (P less than 0.01). In addition, in patients with old diaphragmatic myocardial infarction, both poor and good collaterals were associated with a lower frequency of severe asynergy of the diaphragmatic left ventricular segments at left ventriculography (54% and 14%, respectively), compared to patients with no collaterals to the right coronary artery (92%, P less than 0.02 vs. poor collaterals, P less than 0.001 vs. good collaterals). In contrast, in patients with left anterior descending coronary artery occlusion, the presence of either poor or good collaterals to the left anterior descending coronary artery was not associated with a lower frequency of old anterior myocardial infarction, or, in patients with old anterior myocardial infarction, with a less severe asynergy of the anterior left ventricular segments. Our results suggest that collaterals are effective in protecting the diaphragmatic left ventricular wall in patients with right coronary artery occlusion, but not the anterior left ventricular wall in patients with left anterior descending coronary artery occlusion.
C Vigorito; L De Caprio; S Poto; S Maione; M Chiariello; M Condorelli
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  International journal of cardiology     Volume:  3     ISSN:  0167-5273     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  1983 Jul 
Date Detail:
Created Date:  1983-10-21     Completed Date:  1983-10-21     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  401-15     Citation Subset:  IM    
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MeSH Terms
Collateral Circulation*
Coronary Circulation*
Coronary Disease / physiopathology*
Coronary Vessels / physiopathology
Middle Aged
Myocardial Infarction / prevention & control*

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

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