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Adrenaline concentration selection — DIPIMC MCQ

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HardPharmacology (Pre-Hospital)Adrenaline concentration selectionDIPIMCDipIMC

You must select the correct adrenaline preparation for two situations: intramuscular use in anaphylaxis and intravenous use in cardiac arrest.

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

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Correct answer: A — Use 1:1000 intramuscularly for anaphylaxis and 1:10,000 intravenously in cardiac arrest.

Anaphylaxis is treated with intramuscular adrenaline 1:1000, which is 500 micrograms for an adult, whereas cardiac arrest uses intravenous adrenaline 1:10,000, which is 1 mg. Giving the concentrated 1:1000 solution intravenously, or the dilute 1:10,000 intramuscularly, risks a serious dosing error. Matching concentration and route to the indication prevents harm.

Reference: Resuscitation Council UK Guidelines (2025)