A nurse is mixing a short-acting insulin and an intermediate-acting insulin in the same syringe for a client who has diabetes mellitus.
Which of the following actions should the nurse take first?
Draw the intermediate-acting insulin into the syringe.
Draw the short-acting insulin into the syringe.
Inject air into the intermediate-acting insulin vial.
Inject air into the short-acting insulin vial.
The Correct Answer is C
A. When mixing insulins, you should draw the short-acting insulin into the syringe first. This is done after injecting air into both vials (first into intermediate-acting, then into short-acting). Drawing intermediate-acting insulin first can contaminate the short-acting insulin vial with the longer-acting solution, which could alter the effectiveness of future doses.
B. Although this step is required when mixing insulins, it is not the first step. The nurse should first inject air into both vials to maintain vial pressure.
C. The nurse should inject air into the intermediate-acting insulin vial first because it helps prevent contamination and maintains the correct pressure within the vial. Intermediate-acting insulin, typically NPH (Neutral Protamine Hagedorn), is cloudy, and air injection into the vial allows for easy withdrawal later on without disrupting the order of mixing.
D. Injecting air into the short-acting insulin vial is necessary but should be done after injecting air into the intermediate-acting vial. By injecting air into both vials first, the nurse prevents a vacuum effect, which can make it difficult to draw up the insulin. After injecting air, the nurse can draw the short-acting insulin into the syringe before moving to the intermediate-acting insulin. This order minimizes the risk of contamination.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To calculate the dose of gentamicin to administer to a client who weighs 220 Ib, first convert the client’s weight from pounds to kilograms.
220 Ib is equivalent to 100 kg (220 Ib /.2 Ib/kg = 100 kg).
Then, multiply the client’s weight in kilograms by the dose of gentamicin per kilogram: 100 kg * 2 mg/kg = 200 mg.
Therefore, the nurse should administer 200 mg of gentamicin.
Choice B is wrong because 180 mg is not the correct dose.
Choice C is wrong because 400 mg is not the correct dose.
Choice D is wrong because 440 mg is not the correct dose.
Correct Answer is A
Explanation
This is because chest percussion uses clapping of the chest using a cupped hand to vibrate the airways of the lungs and move and break apart the mucus inside the lungs.
Covering the area of percussion with a towel can help to reduce discomfort during the procedure.
Choice B is wrong because postural drainage should not be scheduled after meals.
It is best to schedule postural drainage before meals or at least 1-2 hours after meals to prevent discomfort or vomiting.
Choice Cis wrong because, during vibration, the client should inhale deeply and exhale slowly.
Choice Dis wrong because percussion should not be performed over the lower back.
It should be performed over the chest and back, avoiding areas such as the spine and breastbone.
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