Adult Health Exam 1 Chamberlain Related

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When using a metered-dose inhaler (MDI), which step is most important for ensuring effective medication delivery?

  • A. Exhale completely before using the inhaler
  • B. Inhale quickly while pressing down on the inhaler
  • C. Shake the inhaler for 10 seconds before use
  • D. Hold breath for 5 seconds after inhaling
Correct Answer: A

Rationale: The correct step to ensure effective medication delivery when using a metered-dose inhaler (MDI) is to exhale completely before using the inhaler. This action helps create more space in the lungs for the medication to reach deeply into the airways. Inhaling quickly while pressing down on the inhaler (Choice B) may cause the medication to impact the throat rather than reaching the lungs. Shaking the inhaler for 10 seconds before use (Choice C) is important to mix the medication but not the most crucial step for effective delivery. While holding the breath for 5 seconds after inhaling (Choice D) can help the medication stay in the lungs momentarily, exhaling completely before inhalation is more critical for optimal drug deposition.