Which one or more of the following devices are used in combination with metered dose inhaler (MDI) therapy to reduce the need for hand-breathing coordination and oropharyngeal impaction of aerosolized drugs?
1) Reservoir devices
2) One-way spacers
3) Valved holding chambers
4) Drying chambers

Question

Quizplus · Accepted Answer

Reservoir devices, one-way spacers, and valved holding chambers are all used with MDIs to improve drug delivery by reducing the need for hand-breathing coordination and minimizing oropharyngeal deposition. Drying chambers are not relevant in this context.

Which One or More of the Following Devices Are Used