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 B
Explanation
Choice A rationale
A blood glucose level of 90 mg/dL (5 mmol/L) is within the normal range and would not need to be reported to the surgeon.
Choice B rationale
A serum creatinine level of 5 mg/dL (442 µmol/L) is significantly elevated, indicating impaired kidney function. This is a critical lab value that should be reported to the surgeon immediately, as it could impact the patient’s ability to safely undergo surgery and recover postoperatively.
Choice C rationale
A hemoglobin level of 13 g/dL (130 g/L) is within the normal range and would not need to be reported to the surgeon.
Choice D rationale
A potassium level of 4 mEq/L (4 mmol/L) is within the normal range and would not need to be reported to the surgeon.
Correct Answer is ["B","C","D","E","F","G"]
Explanation
Choice A rationale
Lamb’s wool is typically used for padding to prevent pressure sores and does not directly relate to the administration of oxygen therapy. Therefore, it is not necessary when a patient is put on oxygen.
Choice B rationale
Sterile water is used in oxygen therapy to provide humidification, which prevents the drying and irritation of the respiratory mucosa. Therefore, it is necessary when a patient is put on oxygen.
Choice C rationale
Tape can be used to secure the oxygen delivery device, such as a nasal cannula, to the patient’s face. Therefore, it is necessary when a patient is put on oxygen.
Choice D rationale
A suction canister is used to collect respiratory secretions during suctioning procedures, which may be necessary for patients with excessive secretions or difficulty clearing secretions.
Therefore, it is necessary when a patient is put on oxygen.
Choice E rationale
A humidifier bottle is used in oxygen therapy to provide humidification, which prevents the drying and irritation of the respiratory mucosa. Therefore, it is necessary when a patient is put on oxygen.
Choice F rationale
A nasal cannula is a device used to deliver supplemental oxygen to a patient who needs oxygen therapy. Therefore, it is necessary when a patient is put on oxygen.
Choice G rationale
A flowmeter is used in oxygen therapy to control the rate of oxygen flow to the patient. Therefore, it is necessary when a patient is put on oxygen.
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