Anaphylaxis peri-arrest — DipIMC MCQ

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EasyResuscitationAnaphylaxis peri-arrestDipIMC

A woman collapses after a wasp sting with wheeze, facial swelling and a thready pulse. She is not in cardiac arrest. What is the most appropriate drug/dose?

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Correct answer: E — Adrenaline 500 micrograms IM into the anterolateral thigh

Option E is correct because Anaphylaxis with airway, breathing or circulation features is treated with prompt IM adrenaline. Option C is less appropriate because that dose is an ALS cardiac-arrest dose and is unsafe for this non-arrest indication; option A is less appropriate because aspirin is useful in ACS but inappropriate for this presentation. Option B is less appropriate because untitrated opioid dosing can cause avoidable hypotension or respiratory depression; option D is less appropriate because steroids have delayed onset and should not replace the immediate treatment. Clinical pearl: in DipIMC-style questions, the best answer is the intervention that changes outcome earliest in the pre-hospital phase.

Reference: Resuscitation Council UK Guidelines