If lung disease results in an arterial P_O2 of 80 mmHg, the total amount of oxygen carried by the blood is 20% below normal.

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Quizplus · Accepted Answer

The total oxygen content in blood depends on both dissolved oxygen and oxygen bound to hemoglobin. An arterial PO2 of 80 mmHg is slightly below normal but does not significantly reduce the total oxygen content by 20% because hemoglobin saturation remains high.

If Lung Disease Results in an Arterial PO2 of 80

If Lung Disease Results in an Arterial P_O2 of 80