A 26-year-old man comes to the emergency room complaining of lethargy, headache, nausea and extreme, weakness. His skin has a cherry-red color. He has a normal arterial PO2, but a low venous PO2 of 20 mmHg (normal is 40 mmHg) . You believe this situation is caused by:
A) Cyanide poisoning
B) Absolute right-to-left cardiopulmonary shunt
C) A right-shifted hemoglobin
D) Hypoventilation
E) Carbon monoxide poisoning
Correct Answer:
Verified
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