Intramyocardial Temperature Gradients in Dogs During Hypothermia by Surface Cooling

Abstract

JOHANSSON, B. W. Intramyocardial temperature gradients in dogs during hyfiothermia by surface cooling. Acta physiol. scand. 1963. 58. 355-358. -In five dogs the temperature in different parts and at different depths in the myocardium were recorded during cooling till asystole or ventricular fibrillation appeared. It was found that the temperature gradients were small and that there was no increase in the gradients with decreasing temperature. It is concluded that the ST-T changes observed during hypothermia in homeothermic animals are not caused by intramyocardial temperature gradients.