Tissue pO₂ and pCO₂ of the Cerebral Cortex, Related to Blood Gas Tensions

Abstract

Abstract Quantitative measurements of the pO 2 and the pCO 2 on the intact surface of the cerebral cortex were made in anesthetized dogs. Simultaneous measurements of the cortical metabolic rate of oxygen and carbon dioxide, as well as of the arterial and cortical venous pO 2 and pCO 2 (G leichmann et al. 1962), allowed calculation of the average tissue pO 2 and pCO 2 according to T hews (1960 a and b). The results indicate that the pO 2 and the pCO 2 electrodes measure tensions which are close to the calculated average tissue pO 2 and pCO 2 respectively.