A patient with neuroleptic malignant syndrome has been prescribed dantrolene 1.5 mg/kg IV. The patient weighs 132 pounds.
The label on the 250 mg vial reads, “Reconstitute with 5 mL sterile water for injection, USP. Reconstitution yields 50 mg/mL.”. How many mL should the nurse administer?
The Correct Answer is ["1.80"]
Step 1 is to convert the patient’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So, the patient’s weight in kilograms is 132 pounds ÷ 2.20462 = 59.87 kg.
Step 2 is to calculate the total dosage of dantrolene needed. The prescribed dosage is 1.5 mg/kg. So, the total dosage is 1.5 mg/kg × 59.87 kg = 89.81 mg.
Step 3 is to calculate the volume of reconstituted dantrolene solution needed to provide the total dosage. The reconstituted solution has a concentration of 50 mg/mL. So, the volume needed is 89.81 mg ÷ 50 mg/mL = 1.80 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["60"]
Explanation
Step 1: We know that the medication is labeled as “750 mcg/2.4 mL”. This means that every 2.4 mL of the medication contains 750 mcg of teriparatide.
Step 2: We need to find out how many mL of the medication contains 60 mcg of teriparatide. We can set up a proportion to solve this: 750 mcg : 2.4 mL = 60 mcg : x mL Step 3: Solving for x gives us: x = (60 mcg * 2.4 mL) ÷ 750 mcg Step 4: Calculating the above expression gives us: x =
0.192 mL So, the nurse should administer 0.192 mL of the medication to deliver a dose of 60 mcg of teriparatide.
Correct Answer is D
Explanation
Choice A rationale
Encouraging the client to participate in a team sport for one hour might be beneficial for the client’s physical health, but it might not be the most important intervention for a client with severe depression who spends most of the day sitting and watching television.
Choice B rationale
Assisting the client in developing a list of daily affirmations can be a helpful strategy for improving self-esteem and promoting positive thinking, but it might not be the most important intervention for a client with severe depression who spends most of the day sitting and watching television.
Choice C rationale
Scheduling the client for a group session that focuses on self-esteem can be beneficial for the client’s mental health, but it might not be the most important intervention for a client with severe depression who spends most of the day sitting and watching television.
Choice D rationale
Helping the client in identifying goals for the day can be a very effective intervention for a client with severe depression. Setting daily goals can provide the client with a sense of purpose and can help to motivate the client to engage in activities other than sitting and watching television.
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