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Anaphylaxis with bronchospasm — ACEM Fellowship MCQ

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EasyRespiratory emergenciesAnaphylaxis with bronchospasmACEM Fellowship

A 19-year-old woman presents to an ED triage bay, category 1, 10 minutes after eating satay. She has wheeze, urticaria, lip swelling and dizziness. BP 82/46, HR 128, SpO2 91% on air. What is the most appropriate investigation?

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Correct answer: ASerum tryptase after immediate treatment is underway

Anaphylaxis is treated immediately with IM adrenaline; tryptase can support diagnosis later but must not delay treatment.

Reference: ASCIA anaphylaxis action plan; ANZCOR anaphylaxis flowchart