Effects of high arterial oxygen tension on function, blood flow distribution, and metabolism in ischemic myocardium.
Author(s) -
Brian A. Cason,
J A Wisneski,
Richard A. Neese,
William C. Stanley,
Robert F. Hickey,
Carla B. Shnier,
Edward W. Gertz
Publication year - 1992
Publication title -
circulation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.795
H-Index - 607
eISSN - 1524-4539
pISSN - 0009-7322
DOI - 10.1161/01.cir.85.2.828
Subject(s) - medicine , hyperoxia , cardiology , blood flow , ischemia , perfusion , artery , hemodynamics , anesthesia , hypoxemia , sonomicrometry , coronary circulation , lung
Although oxygen inhalation therapy has long been used in the treatment of acute myocardial ischemia, experimental evidence that increased arterial PO2 has any beneficial effect in the absence of hypoxemia is equivocal. In this study, we used a swine model of subendocardial myocardial ischemia to determine the effects of arterial hyperoxia on regional myocardial contractile function (sonomicrometry), myocardial blood flow distribution (microspheres), and regional myocardial glycolytic metabolism (carbon isotope-labeled substrates).
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