A patient with respiratory failure would have which of the following acid–base abnormalities?
a. Respiratory acidosis
b. Respiratory alkalosis
c. Metabolic acidosis
d. Metabolic alkalosis
ANS: A
Arterial blood gases in respiratory failure show decreasing PaO2 and pH and increasing PaCO2, which lead to respiratory acidosis. Respiratory alkalosis is associated with hyperventilation. Metabolic imbalances are not caused by respiratory dysfunction.
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