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High-altitude cerebral oedema — RCPSC EM MCQ

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ModerateEnvironmental emergenciesHigh-altitude cerebral oedemaRCPSC EM

A 35-year-old returns from a rapid ascent to high altitude with ataxia, severe headache, and confusion. Oxygen saturation is 72% at altitude, lungs are clear, and symptoms improve slightly with rest. What is the most appropriate initial management?

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

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Correct answer: A — Administer oxygen, dexamethasone, and arrange immediate descent or evacuation

Administer oxygen, dexamethasone, and arrange immediate descent or evacuation is correct: the clues indicate High-altitude cerebral oedema and this option addresses the immediate ED priority. The distractors delay care, target a less likely problem, or are unsafe in this physiology.

Reference: Wilderness Medical Society altitude illness guidance; Canadian wilderness EM practice