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Exertional heat stroke — RCPSC EM MCQ

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ModerateEnvironmental emergenciesExertional heat strokeRCPSC EM

A 19-year-old runner collapses during a humid summer race. Rectal temperature is 41.2°C, he is confused, skin is hot, and sodium is normal. Ice and water are available at the medical tent. What is the most likely diagnosis?

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

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Correct answer: A — Exertional heat stroke

Exertional heat stroke is correct: the clues indicate Exertional heat stroke 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 heat illness emergency practice