Practice Quiz

Respiratory Therapist

Category - Initiation and Modification of Interventions

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When a physician orders an inhaled steroid via MDI twice daily, why is the addition of a spacer recommended?
  1. A spacer allows larger particles to attach to the wall of the device to increase oral deposition.
  2. A spacer allows larger particles to attach to the wall of the device to decrease oral deposition.
  3. A spacer allows smaller particles to attach to the wall of the device to increase oral deposition.
  4. A spacer does not change the attachment of particles in oral deposition.
Explanation
Answer: B-A spacer should be added to the use of a MDI because it allows the larger particles to attach to the wall of the device to decrease oral deposition.

This will help prevent the patient from getting oral candidiasis, which is common with inhaled steroids. The spacer increases the quantity of steroids delivered to the airway and reduced the amount of medicine swallowed, decreasing potential side effects.
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