The position of the oxygen dissociation curve is described by the P50, which represents the PaO2 at an oxygen saturation of what percent?

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Multiple Choice

The position of the oxygen dissociation curve is described by the P50, which represents the PaO2 at an oxygen saturation of what percent?

Explanation:
P50 is the PaO2 at which hemoglobin is 50% saturated with oxygen. The oxygen-hemoglobin dissociation curve shows saturation versus partial pressure of oxygen, and the midpoint of the curve—where SaO2 is about 50%—defines P50. Clinically, this value is around 26–27 mmHg in a healthy adult at normal conditions. Therefore, the saturation corresponding to P50 is 50%.

P50 is the PaO2 at which hemoglobin is 50% saturated with oxygen. The oxygen-hemoglobin dissociation curve shows saturation versus partial pressure of oxygen, and the midpoint of the curve—where SaO2 is about 50%—defines P50. Clinically, this value is around 26–27 mmHg in a healthy adult at normal conditions. Therefore, the saturation corresponding to P50 is 50%.

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