The nurse administering insulin to clients in a nursing home recognizes the signs of an insulin that is unusable. Which of the following insulins may be administered?
A) Insulin from a bottle that is frosted over
B) A prefilled syringe that is milky white
C) A vial of insulin that has been shaken
D) A vial with insulin that has settled
B
Feedback:
Vials or prefilled syringes should be crystal clear (regular insulin or lispro) or milky white, depending on the type of insulin. Vials should not be shaken because this causes air bubbles to form, which could alter the dosage. The nurse should discard vials that do not easily resuspend when rolling them. Other signs of unusable insulin are frosting or coating on the bottle (especially with NPH) and any settling or clumping.
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