Which of the following is NOT a potential cause of hypoventilation?

Which of the following is NOT a potential

Multiple choice — select the best answer

AChronic mountain sickness
BHeroin overdose
CStroke in the brainstem
DHypercapnia (too much CO2 in blood)

✓ Correct answer: D. Hypercapnia (too much CO2 in blood) Stroke in the brainstem, heroin overdose and chronic mountain sickness are all potential causes of hypoventilation. Hypocapnia (too little CO2 in the blood) is another potential cause, but hypercapnia is actually the result of hypoventilation.

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Which of the following is NOT a potential cause of hypoventilation?

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