A nurse is preparing to administer 10 units of regular insulin and 20 units of NPH insulin to a client who has diabetes mellitus.

When mixing the two types of insulin, which of the following actions should the nurse take first?

Replace the needle for withdrawal with a safety needle.

Inject 20 units of air into the NPH insulin vial.

Inject 10 units of air into the regular insulin vial.

Withdraw 10 units of insulin from the regular insulin vial.

Answer and Explanation

The Correct Answer is B

The correct answer is choice B. Inject 20 units of air into the NPH insulin vial.

Choice A rationale:

Replacing the needle for withdrawal with a safety needle is an important step to ensure safety and prevent needle-stick injuries. However, this action is not the first step when mixing two types of insulin. The initial steps involve preparing the insulin vials by injecting air into them.

Choice B rationale:

Injecting 20 units of air into the NPH insulin vial is the correct first step. This is because NPH insulin is a suspension and needs to be mixed properly. Injecting air into the vial helps to equalize the pressure, making it easier to withdraw the correct amount of insulin later. This step is crucial to ensure accurate dosing and proper mixing of the insulin.

Choice C rationale:

Injecting 10 units of air into the regular insulin vial is also necessary, but it is not the first step. The correct sequence is to first inject air into the NPH insulin vial, then into the regular insulin vial. This order helps prevent contamination of the regular insulin with NPH insulin.

Choice D rationale:

Withdrawing 10 units of insulin from the regular insulin vial is an important step, but it should be done after injecting air into both vials. The correct sequence ensures that the insulin is mixed properly and that the doses are accurate.

By following these steps in the correct order, the nurse ensures that the insulin is mixed safely and effectively, minimizing the risk of errors and ensuring proper glycemic control for the patient.

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Free Nursing Study Resources

Correct Answer is C

Explanation

Choice A rationale:
Placing the legs in a dependent position can increase venous pressure and exacerbate venous insufficiency.
Choice B rationale:
Bed rest can lead to venous stasis and worsen venous insufficiency.
Choice C rationale:
Using elastic stockings can help improve venous return and reduce symptoms of venous insufficiency.
Choice D rationale:
Applying ice packs can constrict blood vessels and reduce blood flow, which is not recommended for venous insufficiency.

A. Avoid lifting anything heavier than 4.5 kg (10 lb) for 1 week. B. Notify the surgeon if white drainage develops on the eyelids. C. Sleep on the abdomen to facilitate wound healing. D. Bend at the waist to pick objects up from the floor.

Correct Answer is A

Explanation

Choice A rationale:
Lifting heavy objects can increase intraocular pressure, which should be avoided after cataract surgery.
Choice B rationale:
Any drainage should be reported, not just white.
Choice C rationale:
Sleeping position won’t necessarily affect wound healing in this case.
Choice D rationale:
Bending at the waist can increase intraocular pressure, which should be avoided.

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A nurse is preparing to administer 10 units of regular insulin and 20 units of NPH insulin to a client who has diabetes mellitus. When mixing the two types of insulin, which of the following actions should the nurse take first?

Choice A rationale:

Choice B rationale:

Choice C rationale:

Choice D rationale:

Nursing Test Bank

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A nurse is preparing to administer 10 units of regular insulin and 20 units of NPH insulin to a client who has diabetes mellitus.

When mixing the two types of insulin, which of the following actions should the nurse take first?