Prone Position Impairs Oxygen Supply-Demand Balance During Systemic Hypoxia in Rabbits
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چکیده
منابع مشابه
Right ventricular oxygen supply/demand balance in exercising dogs.
This is the first investigation of right ventricular (RV) myocardial oxygen supply/demand balance in a conscious animal. A novel technique developed in our laboratory was used to collect right coronary (RC) venous blood samples from seven instrumented, conscious dogs at rest and during graded treadmill exercise. Contributions of the RV oxygen extraction reserve and the RC flow reserve to exerci...
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Although large doses of epinephrine increase coronary perfusion pressure and flow during cardiopulmonary resuscitation, epinephrine also increases myocardial oxygen consumption during ventricular fibrillation. To test the hypothesis that epinephrine improves the balance between myocardial oxygen supply and demand during cardiopulmonary resuscitation, myocardial adenosine 5'-triphosphate (ATP) a...
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RATIONALE High-altitude pulmonary edema (HAPE) is characterized by excessive pulmonary vasoconstriction and is associated with decreased concentrations of nitric oxide (NO) in the lung. OBJECTIVES We hypothesized that individuals susceptible to HAPE (HAPE-S) would also have dysfunction of the vascular NO vasodilator pathway during hypoxia in the systemic vasculature. METHODS During normoxia...
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Early studies of ranolazine centered on reductions in myocardial oxygen demand produced by partial inhibition of fatty acid oxidation, particularly as free fatty acid levels increase locally during ischemic episodes. More recent studies report that this mechanism is unlikely to be operative at the plasma levels of ranolazine associated with beneficial clinical effect. A reduction in myocardial ...
متن کاملFailure of epinephrine to improve the balance between myocardial oxygen supply and demand during closed-chest resuscitation in dogs.
Although large doses of epinephrine increase coronary perfusion pressure and flow during cardiopulmonary resuscitation, epinephrine also increases myocardial oxygen consumption during ventricular fibrillation. To test the hypothesis that epinephrine improves the balance between myocardial oxygen supply and demand during cardiopulmonary resuscitation, myocardial adenosine 5'-triphosphate (ATP) a...
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ژورنال
عنوان ژورنال: Yonago Acta Medica
سال: 2021
ISSN: 1346-8049
DOI: 10.33160/yam.2021.05.012