A client is to receive Phenobarbital elixir 60 mg PO. The drug is supplied 15 mg per 5mL. How many mLs should the nurse administer? (Use a preceding zero if it applies. Do not use trailing zeros. Round to the nearest whole number)
The Correct Answer is ["20"]
Determine the concentration of the Phenobarbital elixir:
The drug is supplied as 15 mg per 5 mL.
Concentration = 15 mg / 5 mL = 3 mg/mL
Calculate the volume (in mL) needed for a 60 mg dose:
Use the concentration as a conversion factor:
Volume (mL) = Dose (mg) / Concentration (mg/mL) Volume (mL) = 60 mg / 3 mg/mL = 20 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["10.8"]
Explanation
Calculate the total dose in mg:
The client weighs 90 kg and the dose is 10 mg/kg.
Total dose = 90 kg x 10 mg/kg = 900 mg
Convert the drug available to mg:
The vial contains 1 gram of ceftazidime.
1 gram = 1000 mg
Determine the concentration of the drug in mg/mL:
The vial has 1000 mg of ceftazidime in 12 mL of sterile water.
Concentration = 1000 mg / 12 mL = 83.33 mg/mL
Calculate the volume to withdraw in mL:
Use the concentration as a conversion factor:
Volume (mL) = Total dose (mg) / Concentration (mg/mL) Volume (mL) = 900 mg / 83.33 mg/mL = 10.8 mL
Correct Answer is ["2403"]
Explanation
Convert the patient's weight from pounds to kilograms:
176.3 pounds / 2.2 pounds/kg = 80.136 kg (approximately 80.1 kg)
Calculate the total fluid volume based on the prescribed dosage:
30 mL/kg x 80.1 kg = 2403 mL
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