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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Correct Answer is B

Explanation

Choice A rationale:
Ambulating soon after surgery is actually encouraged as it promotes blood flow and reduces the risk of VTE.
Choice B rationale:
Massaging the legs can dislodge a clot if one has formed, leading to a VTE.
Choice C rationale:
Flexing the ankles promotes blood flow and reduces the risk of VTE.
Choice D rationale:
Elevating the feet can reduce swelling and promote venous return, reducing the risk of VTE.

A. Impaired tissue perfusion. B. Alteration in activity tolerance. C. Impaired skin integrity. D. Alteration in body image.

Correct Answer is A

Explanation

Choice A rationale:
Varicose veins with ulcerations and lower extremity edema indicate poor blood flow, hence impaired tissue perfusion is the priority.
Choice B rationale:
While activity tolerance might be affected, it’s not the immediate concern.
Choice C rationale:
Impaired skin integrity is a concern due to ulcerations, but it’s secondary to impaired perfusion.
Choice D rationale:
Body image might be affected, but it’s not a physiological priority.

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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:

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Naxlex Comprehensive Predictor Exams

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Explanation

Correct Answer is A

Explanation

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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?