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 C
Explanation
Choice A rationale
Paying close attention to the client’s account of the event is important, but it is not the most crucial intervention. The nurse should listen empathetically and nonjudgmentally to the client’s account, but this should not take precedence over ensuring the client’s physical well- being and preserving evidence.
Choice B rationale
Reporting the incident to the university’s security department is not the most crucial intervention. While it is important to report the incident to the appropriate authorities, the nurse’s primary responsibility is to the client. Ensuring the client’s physical well-being and preserving evidence should take precedence.
Choice C rationale
Preventing the client from showering until all evidence is collected is the most crucial intervention. Showering can destroy valuable physical evidence that can be used in the investigation and prosecution of the crime.
Choice D rationale
Ascertaining the client’s personal reaction to the reported rape is important, but it is not the most crucial intervention. The nurse should provide emotional support and refer the client to counseling services, but this should not take precedence over ensuring the client’s physical well-being and preserving evidence.
Correct Answer is A
Explanation
Choice A rationale
Testing the fluid on the dressing for glucose is the immediate course of action when a nurse notices clear fluid on the surgical dressing of a patient who has just returned from lumbar spinal surgery. Clear fluid could be cerebrospinal fluid (CSF), which contains glucose. If the fluid is positive for glucose, it could indicate a CSF leak, which requires immediate medical attention.
Choice B rationale
Changing the dressing using a compression bandage is not the immediate course of action. The source of the fluid needs to be identified first.
Choice C rationale
Marking the drainage area with a pen and continuing to monitor is not the immediate course of action. The source of the fluid needs to be identified first.
Choice D rationale
Documenting the findings in the electronic medical record is important, but it is not the immediate course of action. The source of the fluid needs to be identified first.
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