Blood gas tension constant 0.0031 represents the amount of oxygen dissolved in plasma. The dissolved-oxygen term is generally small relative to the term for hemoglobin-bound oxygen, but becomes significant at very high PO (as in a hyperbaric chamber) or in severe anemia. This is an estimation and does not account for differences in temperature, pH and concentrations of 2,3 DPG. Blood gas tension Blood gas tension refers to the partial pressure of gases in blood. There are several significant purposes for measuring gas tension; the most common gas tensions measured are oxygen tension (PO), the carbon dioxide tension (PCO) and carbon monoxide tension
Blood–gas partition coefficient (lipid) tissues of the brain where it can exert its effect. The potency of an anesthetic is associated with its lipid solubility which is measured by its oil/gas partition coefficient. Minimum Alveolar Concentration (MAC) is defined as the alveolar concentration of anesthetic gas that prevents a movement response in half of subjects undergoing a painful (surgical) stimulus; simplified, it is the exhaled gas concentration required to produce anaesthetic effects - an inverse indicator of anesthetic gas potency. Partition coefficients at 37 °C. Blood–gas partition coefficient Blood–gas partition coefficient, also known as Ostwald coefficient for blood–gas, is a term used in