Which device is most appropriate to administer ribavirin to a 3-year-old child with bronchiolitis?

• A. Ultrasonic nebulizer
• B. Small volume nebulizer
• C. Continuous medication nebulizer
• D. Small particle aerosol generator

Answer: (D)

Delivering ribavirin effectively relies on producing an aerosol with particles small enough to reach the lower airways. A small particle aerosol generator creates aerosols in the submicron to a few micron range, allowing deposition in the bronchioles and deeper lungs where the antiviral action is needed. This particle size optimization means the drug is more likely to reach the sites of infection rather than depositing in the mouth or upper airways, which is why it’s the most appropriate device for a child with bronchiolitis. Ultrasonic or small volume nebulizers tend to generate larger droplets and can reduce distal delivery or affect drug stability, and a continuous medication nebulizer describes how therapy is delivered rather than the device's particle size capability. Therefore, the device designed to produce small particles is the best choice.