The nurse has an order to administer U-500 Humulin R insulin 10 units. How many units should the nurse draw up when administering this insulin?
50 units of Humulin R insulin in a 100-unit insulin syringe.
10 units of Humulin R insulin in a 500-unit insulin syringe.
10 units of Humulin R insulin in a 30-unit insulin syringe.
50 units of Humulin R insulin in a 50-unit insulin syringe.
The Correct Answer is B
The correct answer is B. 10 units of Humulin R insulin in a 500-unit insulin syringe.
Choice A rationale: This choice is incorrect because a 100-unit syringe would not be able to hold enough U-500 insulin (5 times more concentrated) to deliver the prescribed 10 units. Using a 100-unit syringe could lead to an inaccurate dose.
Choice B rationale: This choice is correct. U-500 Humulin R insulin is a concentrated form containing 5 times more insulin per milliliter compared to U-100 insulin. Therefore, a 500-unit syringe is appropriate to measure the prescribed 10 units accurately.
Choice C rationale: This choice is incorrect. A 30-unit syringe would not have the capacity to hold even the 10 units of U-500 insulin. It would be impossible to draw up the correct dose with this syringe size.
Choice D rationale: This choice is incorrect. Similar to choice A, a 50-unit syringe is not suitable for U-500 insulin due to its limited capacity. It would lead to an inaccurate measurement of the 10-unit dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Neither heparin nor warfarin work to dissolve clots that have already formed. Instead, they work by reducing the blood’s ability to clot, preventing the formation of new clots and the growth of existing ones.
Choice B rationale
While it’s important for healthcare providers to communicate and explain treatments, it’s not necessary for the charge nurse to call the provider for an explanation in this case. The nurse should be able to explain the rationale for the medication regimen.
Choice C rationale
Heparin does not enhance the effects of warfarin. Both are anticoagulants, but they work in different ways and do not enhance each other’s effects.
Choice D rationale
Heparin will be continued until the warfarin reaches a therapeutic level. Heparin and warfarin are both anticoagulants that decrease the clotting ability of the blood and help prevent harmful clots from forming in the blood vessels. However, they work in different ways to achieve therapeutic coagulation and must be given together until therapeutic levels of anticoagulation can be achieved by warfarin alone, which usually takes about 3 days.
Correct Answer is C
Explanation
Choice A rationale
While monitoring BUN (Blood Urea Nitrogen) levels can provide information about kidney function and hydration status, it is not specifically related to the use of isoniazid (INH) for tuberculosis treatment.
Choice B rationale
PT (Prothrombin Time) and PTT (Partial Thromboplastin Time) are tests that measure the time it takes for blood to clot. These tests are not specifically related to the use of isoniazid (INH) for tuberculosis treatment.
Choice C rationale
Liver enzymes (LFTs) should be monitored in patients taking isoniazid (INH) because this medication can cause hepatotoxicity, or liver damage. Regular monitoring of liver enzymes can help detect this potential side effect early.
Choice D rationale
While a CBC (Complete Blood Count) can provide important information about a patient’s overall health, it is not specifically related to the use of isoniazid (INH) for tuberculosis treatment.
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