SIMON BOOTH / SCIENCE PHOTO LIBRARY SIMON BOOTH / SCIENCE PHOTO LIBRARY
Asthma spacer use. Boy using an asthma spacer with a blue asthma inhaler. The spacer (plastic chamber) acts as a reservoir, retaining the vapour from the inhaler and allowing the patient to inhale it at their chosen rate. Asthma attacks may be triggered by allergies to dust mites and their faeces.
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