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Amide LA Allergy Alternative — FRCA Final MCQ

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ModerateRegional AnaesthesiaAmide LA Allergy AlternativeFRCA Final

A 28-year-old with confirmed amide LA anaphylaxis needs emergency popliteal nerve block. Which LA is safe?

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

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Correct answer: C — Chloroprocaine

All commonly used LAs (lidocaine, bupivacaine, ropivacaine, prilocaine, levobupivacaine) are amide-type. True amide allergy = cross-reactivity risk with all amides. Chloroprocaine is ester-type with no amide cross-reactivity. Rapid onset, short duration.

Reference: Association of Anaesthetists – 2020 – Local anaesthetic allergy