Left ventricle myocardial temperatures in the intact dog

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Abstract
Gradients between the left ventricle myocardial temperatures and that of the left ventricle blood were measured by transthoracic route in the intact dog. Results revealed that myocardial temperature is not uniform. Higher gradients were found in the basal portion of the interventricular septum and the papillary muscles and lower ones in the apical region. These differences are thought to be related to the thickness of myocardium as well as the relation between metabolic activity and vascularity of the sites where the temperatures were measured.