A decrease in the H+ ion concentration [H+] of the blood caused by a low PaCO2 best describes which of the following?

a. Metabolic acidosis
b. Metabolic alkalosis
c. Respiratory acidosis
d. Respiratory alkalosis


ANS: D
Any physiologic process that lowers the arterial PCO2 (<35 mm Hg) and raises the arterial pH (>7.45) produces respiratory alkalosis.

Health Professions

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