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Anaphylaxis — RCPSC EM MCQ

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ModerateRespiratory emergenciesAnaphylaxisRCPSC EM

CTAS 1. A 16-year-old develops wheeze, urticaria, and lip swelling minutes after eating peanuts. BP is 86/42 mmHg, HR 132, and SpO2 91%. He has not received prehospital medication. What is the most appropriate initial management?

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Correct answer: C — IM epinephrine into the anterolateral thigh

Anaphylaxis with respiratory compromise and shock requires prompt IM epinephrine; adjuncts do not replace epinephrine.

Reference: Canadian Immunization Guide: Anaphylaxis; CPS emergency anaphylaxis guidance