The Role of PAO2 in the Circulatory and Respiratory Systems

The DO2 equation describes the amount of oxygen per minute being delivered via whole blood. How much oxygen is bound to that hemoglobin is the thing that determines the content or whole blood the most. PAO2 plays very little role in it. We could say that PAO2 may give you a representation of the patient's lungs somewhat that may allow you to anticipate their future course. I'm not even sure what PAO2 tells you at this point."