A physician at a health care facility suggests the use of a metered-dose inhaler for an asthmatic client. Which of the following describes the mechanism of a metered-dose inhaler?
A) A canister containing medication that is released when the container is compressed
B) A propeller-driven device that spins and suspends a finely powdered medication
C) A device that forces liquid drug through a narrow channel using pressurized air
D) A device that forces medication through a narrow channel with the help of inert gas
A
Feedback:
A metered-dose inhaler is a canister that contains medication under pressure; the aerosolized drug is released when the container is compressed. A metered-dose inhaler is not propeller-driven. An aerosol results after a liquid drug is forced through a narrow channel using pressurized air or an inert gas.
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