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 C

Explanation

Choice A rationale:
Impedance plethysmography is a test that uses electrical signals to measure blood flow and can be used to detect deep vein thrombosis (DVT). However, it is not the first-line diagnostic tool for DVT.
Choice B rationale:
Cold therapy can help reduce inflammation and pain, but it is not a diagnostic measure for DVT.
Choice C rationale:
Venous duplex ultrasound is the most common test used to diagnose DVT. It uses sound waves to create pictures of the blood flowing through the veins in the leg.
Choice D rationale:
Homan’s sign is a physical examination finding that was traditionally used to diagnose DVT, but it is not reliable or specific.

A. Obtain a pair of slipper-socks for the client. B. Increase the client's oral fluid intake. C. Rub the client's feet briskly for several minutes. D. Place a moist heating pad under the client's feet.

Correct Answer is A

Explanation

Choice A rationale:
Providing warm slipper-socks can help increase the client’s comfort by keeping their feet warm.
Choice B rationale:
Increasing the client’s oral fluid intake would not directly affect the temperature of their feet.
Choice C rationale:
Rubbing the client’s feet briskly for several minutes could potentially harm the client, especially if they have decreased sensation in their feet due to peripheral vascular disease.
Choice D rationale:
Placing a moist heating pad under the client’s feet could potentially burn the client, especially if they have decreased sensation in their feet due to peripheral vascular disease.

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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

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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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?