Temperature coefficients for Pco₂ and Po₂ of blood in vitro

Abstract

Temperature coefficients of Pco 2 and Po 2 have been determined experimentally for fresh human blood. Changes in Pco 2 over 18 C conformed closely to an exponential change with Pco 2 (hot)/Pco 2 (cold) equal to 10 to the power of 0.019 x temperature difference. For change of Po 2 in fully saturated blood the corresponding value for the exponential constant was 0.0052. In contrast to water, the changes during warming were not significantly different from those during cooling. The exponential constant for oxygen rose with decreasing hemoglobin saturation to 0.032 at 83%. blood carbon dioxide tension; blood oxygen tension; polarography; temperature correction factors for blood Submitted on March 11, 1964