A patient with COPD who has been receiving oxygen therapy for an extended time on high flow may be at risk for which of the following acid-base imbalances?
A) Respiratory acidosis
B) Respiratory alkalosis
C) Metabolic acidosis
D) Metabolic alkalosis
Ans: A
Feedback: Because hypoxemia is a stimulus for respiration in the patient with long-standing COPD, increasing the oxygen flow rate may raise the oxygen level in the patient's blood but lead to depression of the respiratory drive and retention of carbon dioxide, thus increasing the likelihood of respiratory acidosis.
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