Hyperkalaemic arrest — DipIMC MCQ
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Correct answer: E — Give calcium chloride according to ALS hyperkalaemia protocol
Option E is correct because Suspected hyperkalaemic arrest is a reversible cause where calcium stabilises the myocardium. Option A is less appropriate because that dose is an ALS cardiac-arrest dose and is unsafe for this non-arrest indication; option C is less appropriate because aspirin is useful in ACS but inappropriate for this presentation. Option D is less appropriate because untitrated opioid dosing can cause avoidable hypotension or respiratory depression; option B 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