The Influence of Moderate Hypothermia on Cerebral Cortex Tissue Oxygen Tension

Abstract
The validity of mechanisms balancing oxygen transport and consumption in hypothermia are difficult to analyse because almost any parameter of the transport system is temperature dependent. Two types of experiments have been performed in the rat cerebral cortex to elucidate this problem: I) PO2 microelectrode study: 32–37°C bodytemperature, spontaneous respiration. Measurements within the upper tissue layer of 200–500 um thickness (N=15). II) PO2 surface electrode study: 26–37°C body temperature, artificial respiration. Investigation of the arachnoidal and pial area (N=46).