Which blood gas parameter is the acid—base component that reflects kidney function?
a. pH
b. PaO2
c. PaCO2
d. HCO3-
D
The bicarbonate (HCO3-) is the acid-base component that reflects kidney function. The bicarbonate is reduced or increased in the plasma by renal mechanisms. The normal range is 22 to 26 mEq/L. pH measures the hydrogen ion concentration of plasma. PaO2 measures partial pressure of oxygen dissolved in arterial blood plasma. PaCO2 measures the partial pressure of carbon dioxide dissolved in arterial blood plasma.
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