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Severe accidental hypothermia with cardiac instability — RCPSC EM MCQ

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HardEnvironmental emergenciesSevere accidental hypothermia with cardiac instabilityRCPSC EM

CTAS 1: A 64-year-old is found outdoors after a winter fall. Core temperature is 27.5°C, BP 78/42, HR 32 with Osborne waves, and GCS is 6. Glucose is 5.8 mmol/L and potassium is 4.9 mmol/L. No major trauma is found on primary survey. What is the most appropriate next step?

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

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Correct answer: AArrange active internal rewarming with extracorporeal support consultation

Profound hypothermia with haemodynamic instability warrants active internal rewarming and consideration of ECMO or cardiopulmonary bypass where available. Bradycardia may be physiologic.

Reference: Wilderness Medical Society hypothermia guidance; Canadian EM practice