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 D
Explanation
Step 1: Calculate the total fluid intake. The client received 0.9% sodium chloride 600 mL IV infusion and cefazolin 250 mg in dextrose 5% in water 100 mL intermittent IV bolus. So, the total fluid intake is 600 mL + 100 mL = 700 mL.
Step 2: Calculate the total fluid output. The client had 200 mL emesis, 40 mL voided urine, and 20 mL urine from straight catheterization. So, the total fluid output is 200 mL + 40 mL + 20 mL = 260 mL.
Step 3: Calculate the net fluid intake. The net fluid intake is the total fluid intake minus the total fluid output. So, the net fluid intake is 700 mL - 260 mL = 440 mL.
Therefore, the nurse should record the net fluid intake as 440 mL.
Correct Answer is D
Explanation
According to the Centers for Disease Control and Prevention (CDC), tuberculosis (TB) infection control plan is part of a general infection control program designed to ensure prompt detection of infectious TB patients, airborne precautions, and treatment of people who have suspected or confirmed TB disease.
Choice A, Contact precautions, are not necessary for TB patients as TB is not spread through contact.
Choice B, Protective precautions, are used to protect immunocompromised patients from infections and are not necessary for TB patients.
Choice C, Droplet precautions, are used for diseases that are spread through large respiratory droplets and are not necessary for TB patients as TB is spread through airborne droplet nuclei.
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