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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Prepare the client for a central venous line.
Parenteral nutrition (PN) with 20% dextrose and fat emulsions is a hypertonic solution that requires infusion through a central venous line to prevent damage to peripheral veins.
Choice A is wrong because the PN infusion bag should be changed every 24 hours, not every 48 hours.
Choice Cis wrong because blood glucose should be monitored more frequently than once daily when initiating PN therapy.
Choice Dis wrong because PN and fat emulsions can be administered together in a total nutrient admixture (TNA)1.
Correct Answer is C
Explanation
As people age, they may experience a decrease in their sense of balance. This can increase the risk of falls and injuries.
Choice A is wrong because older adults may actually have a decreased sense of pain.
Choice B is wrong because older adults may experience changes in their sleep patterns, including difficulty falling asleep or staying asleep.
Choice D is wrong because while urinary incontinence can be a common issue among older adults, it is not limited to nighttime.
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