Abstract:Regional myocardial blood flow was assessed in 6 anaesthetized dogs using radiolabelled microspheres. Lactate, H+, and O2 content were measured in arterial and local venous blood, obtained from the area supplied by the circumflex branch of the left coronary artery (LCX). Constriction of LCX by 67% led to considerable hemodynamic changes indicative of depressed global myocardial function. A significant release of lactate from the underperfused part of the left ventricle was recorded. Infusion of 0.7 micrograms/… Show more
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