Into which of the following containers would it be necessary to inject a volume of air equal to the intended volume of medication before withdrawing the medication with a needle and syringe?
A) Ampule
B) Vial
C) Nebulizer
D) Prefilled syringe

Question

Quizplus · Accepted Answer

Injecting air into a vial before withdrawing medication is necessary to equalize the pressure inside the vial. This makes it easier to withdraw the medication and ensures accurate dosing. Ampules, nebulizers, and prefilled syringes do not require this step.

Into Which of the Following Containers Would It Be Necessary