Difficulty: Medium
Average Score: 90%
Simulated
A patient has the following blood gases: PaCO2 33, pH 7.50, HCO3 23. Which of the following could NOT be the cause of this condition?
Correct answer
D
Rationale
Low PaCO2 and high pH indicate respiratory alkalosis, which COPD does not cause, as it typically leads to respiratory acidosis.