Canadian Pharmacist Qualifying Exam Practice · Question
What is the primary reason for using a spacer device with a metered-dose inhaler (MDI)?
Spacers reduce the velocity of the aerosolized medication, minimizing deposition in the oropharynx and increasing the amount of drug that reaches the lungs, thu
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Question: What is the primary reason for using a spacer device with a metered-dose inhaler (MDI)?
Answer options: ✅ To improve drug delivery to the lungs and reduce local side effects.
- To increase the total dose of medication delivered per puff.
- To shorten the time required for inhalation.
- To allow the inhaler to be used while lying down.
Correct answer: To improve drug delivery to the lungs and reduce local side effects.
Explanation: Spacers reduce the velocity of the aerosolized medication, minimizing deposition in the oropharynx and increasing the amount of drug that reaches the lungs, thus improving efficacy and reducing local side effects like thrush.
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