Document Detail

Methods for the metabolic quantification of regional myocardial ischemia.
MedLine Citation:
PMID:  3309463     Owner:  NLM     Status:  MEDLINE    
An adequate balance between oxygen supply and demand is a basic requirement for normal cardiac function. When oxygen supply does not meet the demand, progressive cellular damage occurs leading to cardiac dysfunction and, ultimately, tissue death. While traditionally "ischemia" has been defined as decreased oxygen supply secondary to a decrease in blood flow, and "hypoxia" as decreased oxygen supply secondary to a decrease in oxygen tension, this review defines ischemia in its broader sense, namely as a pathophysiologic state in which there is a lack of oxygen relative to the demand for it. In a large number of experimental studies involving the heart, there is need to promptly recognize the ischemic state, to monitor its course in vivo, and to quantify it. Because of cardiac autoregulatory mechanisms, research methods which attempt to quantify supply (e.g., measurement of myocardial blood flow) and/or demand (e.g., measurement of myocardial oxygen consumption) do not necessarily reflect the status of the balance between supply and demand. An imbalance between myocardial supply and demand is more likely to be reflected by metabolic fluxes and by the accumulation of products specific to the ischemic state. Thus, the purpose of this review is to summarize the various methods available to the cardiac surgical investigator today for the metabolic quantification of myocardial ischemia. Due to the complexity of the heart and its inherent regional differences, myocardial ischemic changes are frequently regional in nature. Thus, this review will address metabolic methods for the regional quantification of myocardial ischemia.
S Y Siouffi; E M Kwasnik; S F Khuri
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  The Journal of surgical research     Volume:  43     ISSN:  0022-4804     ISO Abbreviation:  J. Surg. Res.     Publication Date:  1987 Oct 
Date Detail:
Created Date:  1987-11-17     Completed Date:  1987-11-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376340     Medline TA:  J Surg Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  360-78     Citation Subset:  IM    
Department of Surgery, West Roxbury Veterans Administration Medical Center, Massachusetts 02132.
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MeSH Terms
Coronary Disease / metabolism*
Magnetic Resonance Spectroscopy
Myocardium / metabolism*
Oxygen Consumption

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

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