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Spacer Selection — RACP Paediatrics MCQ

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EasyRespiratorySpacer SelectionRACP Paediatrics

A 10-year-old child is diagnosed with moderate persistent asthma. He is commenced on a combination ICS/LABA inhaler. Which spacer should be used with a pressurised metered-dose inhaler (pMDI)?

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

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Correct answer: C — A large-volume spacer (≥150 mL) with mouthpiece

A large-volume spacer (≥150 mL) with a mouthpiece is recommended for children ≥4 years using a pMDI. It improves lung deposition, reduces oropharyngeal deposition (and therefore local side effects), and removes the need to coordinate actuation and inhalation. Spacers should be primed before first use and cleaned with detergent.

Reference: National Asthma Council Australia – 2024 – Australian Asthma Handbook