Nitrous oxide – laceration — RACP Paediatrics MCQ

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EasyEmergencyNitrous oxide – lacerationRACP Paediatrics

A 6-year-old requires laceration repair. The wound is clean and on the forehead. The child is anxious but cooperative. The parent is present. What is the most appropriate analgesic/anxiolytic approach for this mildly painful procedure?

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Correct answer: A — Nitrous oxide (Entonox)

Nitrous oxide (Entonox, 50:50 N2O/O2) is ideal for mildly to moderately painful procedures in cooperative children. It provides rapid onset anxiolysis and mild analgesia with quick recovery. Combined with topical anaesthetic cream (LMX or EMLA) or local infiltration, it is effective for laceration repair. The child must be able to hold the mask and self-administer.

Reference: RCH Melbourne – 2023 – Procedural Sedation CPG; RACP Paediatric Curriculum – Emergency