Reduced arterial oxygen saturation

Blood oxygen saturation (SO2) is the percentage of oxygen-bound hemoglobin (HbO2) capacity in the blood that can be combined with the total hemoglobin (Hb) capacity. parameter. The functional oxygen saturation is the ratio of the concentration of HbO2 to the concentration of HbO2 + Hb, which is different from the percentage of oxygenated hemoglobin. Therefore, monitoring arterial oxygen saturation (SaO2) can estimate lung oxygenation and hemoglobin oxygen carrying capacity. The oxygen saturation of normal human arterial blood is 98%.

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