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Carbon monoxide poisoning in pregnancy — RCPSC EM MCQ

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ModerateToxicologyCarbon monoxide poisoning in pregnancyRCPSC EM

A 28-year-old at 20 weeks' gestation is exposed to a faulty furnace. She has headache, vomiting, and COHb 18% after high-flow oxygen. Fetal heart rate is reassuring and ECG is normal. What is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: B — Carbon monoxide poisoning in pregnancy

Carbon monoxide poisoning in pregnancy is correct: the clues indicate Carbon monoxide poisoning in pregnancy and this option addresses the immediate ED priority. The distractors delay care, target a less likely problem, or are unsafe in this physiology.

Reference: Canadian poison centre practice; hyperbaric medicine guidance