A client with neuroleptic malignant syndrome receives a prescription for dantrolene 1.5 mg/kg IV. The client 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 ["1.8"]
The client weighs 132 pounds. To convert pounds to kilograms, divide the weight in pounds by
2.2. So, the client’s weight in kilograms is: Step 1: 132 pounds ÷ 2.2 = 60 kg The prescription for dantrolene is 1.5 mg/kg. To find out how many milligrams the client should receive, multiply the client’s weight in kilograms by the dosage in mg/kg: Step 2: 60 kg × 1.5 mg/kg = 90 mg The vial is reconstituted to yield a concentration of 50 mg/mL. To find out how many mL the nurse should administer, divide the total dosage in milligrams by the concentration in mg/mL: Step 3: 90 mg ÷ 50 mg/mL = 1.8 mL So, the nurse should administer 1.8 mL of dantrolene.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
While taking the blood pressure in the other arm might avoid the spasms, it does not address the underlying cause of the spasms. Therefore, this is not the best action for the nurse to take.
Choice B rationale
Using a different sphygmomanometer would not necessarily prevent the spasms from occurring. The spasms are likely not caused by the equipment itself, but rather a physiological issue within the client.
Choice C rationale
The spasms in the client’s hand and fingers could be a sign of hypocalcemia, a condition where there is not enough calcium in the blood. One of the symptoms of hypocalcemia is muscle spasms or tetany. Therefore, reviewing the client’s serum calcium level would be an appropriate action to take.
Choice D rationale
Administering a PRN antianxiety medication would not address the underlying cause of the spasms. While anxiety can cause muscle tension and spasms, there is no indication in the scenario that anxiety is the cause of this client’s symptoms.
Correct Answer is C
Explanation
Choice A rationale
While avoiding exposure to large crowds can help prevent infections, especially for patients with compromised immune systems, it is not the most crucial information for a patient with liver damage due to an overdose of acetaminophen.
Choice B rationale
While emotional support is important for patients dealing with health issues, calling a crisis hotline if feeling lonely is not the most crucial information for a patient with liver damage due to an overdose of acetaminophen.
Choice C rationale
This is the most crucial information for the patient. Acetaminophen is found in many over-the- counter medications, and further intake could exacerbate liver damage.
Choice D rationale
While a balanced diet is important for overall health, following a high carbohydrate, low fat, low protein diet is not the most crucial information for a patient with liver damage due to an overdose of acetaminophen.
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