Document Detail

A clinical method for detecting subendocardial ischemia after cardiopulmonary bypass.
MedLine Citation:
PMID:  1078588     Owner:  NLM     Status:  MEDLINE    
Subendocardial ischemia with consequent subendocardial necrosis is a frequent cause of death after cardiopulmonary bypass. The problem is caused by an inequity in the oxygen requirements of the subendocardium and the available blood supply. We have developed a means of detecting ischemia early in the postperfusion period. Using an analogue computer, we determine the endocardial viability ratio (EVR). This value may decrease before either systemic or central venous pressure changes. Thus the ratio can reflect early the danger of subendocardial ischemia. Another advantage is that equipment now common in coronary care units can be used to determine the EVR.
P A Philips; A T Marty; A M Miyamoto; L A Brewer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of thoracic and cardiovascular surgery     Volume:  69     ISSN:  0022-5223     ISO Abbreviation:  J. Thorac. Cardiovasc. Surg.     Publication Date:  1975 Jan 
Date Detail:
Created Date:  1975-04-19     Completed Date:  1975-04-19     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376343     Medline TA:  J Thorac Cardiovasc Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  30-9     Citation Subset:  AIM; IM    
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MeSH Terms
Assisted Circulation
Blood Pressure
Cardiopulmonary Bypass*
Computers, Analog
Coronary Artery Bypass
Coronary Circulation
Coronary Disease / diagnosis*,  therapy
Extracorporeal Circulation*
Heart Valves / surgery
Middle Aged
Postoperative Complications / diagnosis,  mortality

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

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