Final answer:
B. During sequential medication doses using a single syringe Reusing a medication-filled syringe is never acceptable due to contamination risks, except for sequential medication doses in a single patient context. Sterile transferring techniques are critical for laboratory work to maintain sterility.
Step-by-step explanation:
It is never acceptable to reuse a medication-filled syringe, regardless of whether the needle is replaced. Reusing a syringe or needle that has already been used, even just to penetrate the septum of a vial, can lead to contamination and could pose a risk of infection to the patient. The only situation where syringes are allowed to be reused is within a single patient context and when the syringe is used to deliver multiple doses of a medication during a single procedure or medication administration session. However, this does not apply to accessing the medication, in which case each access should be done with sterile, new equipment to prevent contamination and maintain aseptic technique.The proper techniques for transferring sterile liquids involve holding tubes or bottles at an angle to reduce contamination, flaming the opening before and after transfer, and practicing pipetting techniques with water before handling actual sterile or contaminated liquids.
Applying these principles helps maintain sterility and precision in the transfer of liquids in laboratory settings.It is an acceptable practice to reuse a medication-filled syringe when accessing medication from a multidose vial with a used syringe.Reusing a syringe for sequential medication doses using a single syringe (option B) or accessing a multidose vial with a used needle (option C) is not recommended as it increases the risk of contamination and infection.Replacing the needle on a used syringe to access a single dose vial (option A) is also not an appropriate practice, as it is safer to use a new syringe for each new vial or dose.