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Adrenaline preparation and route — DIPIMC MCQ

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HardPharmacology (Pre-Hospital)Adrenaline preparation and routeDIPIMCDipIMC

A patient with anaphylaxis and a maintained circulation needs intramuscular adrenaline. The crew have both 1:1000 and 1:10,000 ampoules available.

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

Reveal the answer and explanation

Correct answer: B — 1:1000 intramuscularly - the correct preparation and route for anaphylaxis

Explanation lettering: E = shown as A · C = shown as B · A = shown as C · B = shown as D · D = shown as E

In anaphylaxis with a circulation, adrenaline is given as 1:1000 intramuscularly (0.5 mL equals 500 micrograms in an adult), whereas the dilute 1:10,000 preparation is the one used intravenously in cardiac arrest. Giving 1:1000 intravenously (B) delivers a dangerously concentrated dose. Distinguishing the two concentrations and their correct routes prevents a serious and recognised medication error.

Reference: Resuscitation Council UK 2025; JRCALC