Question: how to calculate percentage saturation of haemoglobin with oxygen?
Answer: Oxygen content (ml/dl) is calculated Page 7 as: (1.34 x Hb x SO2) + (0.003 x PO2) where SO2 is percent hemoglobin saturation with oxygen. Venous admixture is normally less than 5% of the cardiac output; values over 10% are considered to be increased. Venous admixture may increase to over 50% in diffuse lung disease.