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General Medicine · Emergency and critical care: severe hypothermia
Sample itemA homeless man found in winter has a core temperature of 28 C, bradycardia and J waves on the ECG. What is the correct management?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Gentle handling with active core rewarming
J (Osborn) waves are typical of hypothermia. Moderate to severe hypothermia needs gentle handling to avoid ventricular fibrillation and active core rewarming. Cardiac drugs are ineffective and arrhythmias are refractory until warmed.
Option by option
A. Rapid external heating with a hot bath
Rapid external heating can cause peripheral vasodilation and rewarming shock.
B. Gentle handling with active core rewarming (correct)
Correct. Active core rewarming with gentle handling is appropriate.
C. Intravenous amiodarone
Amiodarone is ineffective in hypothermic arrhythmias.
D. Intravenous adrenaline infusion
Adrenaline is ineffective in cold myocardium and may precipitate arrhythmia.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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