One intern calculated the concentration of O2 in blood as 0.0025 ml/ml of blood. Considering atmospheric pressure as 760mmHg, how much approximate O2 tension could have been in the blood?
40 mmHg
60 mmHg
80 mmHg
100 mmhg
For PO2 to be 100mmHg, the dissolved O2 level has to be around 0.30ml/dL of blood.
So when the O2 level is 0.25ml/dL, the PO2 is around 80mmHg.