What is the primary function of a spacer device in aerosol therapy?

The primary function of a spacer device in aerosol therapy is to prevent the need for breath coordination. When using metered-dose inhalers (MDIs), proper inhalation technique is critical for effective medication delivery. A spacer allows the medication to be aerosolized and stored for a brief moment before the patient inhales it, making it easier to inhale the medication deeply and effectively into the lungs. This is particularly beneficial for individuals, such as children or those with coordination difficulties, who may struggle with the timing required to activate the inhaler and breathe in simultaneously. By using a spacer, patients can inhale the medication at their own pace, significantly increasing the chances of proper medication delivery.

Other options may touch on aspects related to medication delivery, but they do not reflect the primary function of spacers as effectively as the ability to facilitate inhalation without requiring precise coordination.