The nurse is preparing to administer ampicillin PO to a 12-year-old child with impetigo who weighs 88 pounds. The prescription is for 50 mg/kg/day. How many mg should the child receive per day? (Enter numeric value only.)
The Correct Answer is ["2000"]
Here's how to calculate the total milligrams of ampicillin the child should receive per day:
Convert child's weight to kilograms:
Weight (kg) = Weight (lbs) / Conversion factor (lbs/kg)
Weight (kg) = 88 lbs / 2.205 lbs/kg
Weight (kg) = 40 kg (round to nearest whole number)
Calculate the total daily dosage:
Daily dosage (mg) = Dose per kg (mg/kg/day) * Weight (kg)
Daily dosage (mg) = 50 mg/kg/day * 40 kg
Daily dosage (mg) = 2000 mg
Therefore, the child should receive 2000 mg of ampicillin per day.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["168"]
Explanation
Here's how to calculate the total zidovudine dosage (mg) the nurse should prepare to administer:
1. Convert client weight from pounds to kilograms:
Client weight (kg) = Client weight (lb) / 2.2
Client weight (kg) = 185 lb / 2.2
Client weight (kg) = 84.1 kg (approximately)
2. Calculate the total zidovudine dose based on weight and prescribed dosage:
Dose (mg) = Dose (mg/kg) x Client weight (kg)
Dose (mg) = 2 mg/kg x 84.1 kg
Dose (mg) = 168.2 mg (round to nearest whole number as requested)
Therefore, the nurse should prepare to administer 168 mg of zidovudine.
Correct Answer is ["0.25"]
Explanation
Here's how to calculate the volume the nurse should administer after reconstituting the medication:
Reconstitution:
The medication vial is labeled "0.3 mg with 1.2 mL of sterile water." This means adding 1.2 mL of diluent will result in a total volume of 1.2 mL solution.
Important Note:
The concentration of the medication after reconstitution is not explicitly provided on the label.
We cannot directly calculate the volume to administer based solely on the prescribed dose (0.0625 mg) and the unknown concentration.
Scenario:
In real-world practice, nurses rely on the medication information sheet or the manufacturer's label for dilution instructions and the final concentration after reconstitution.
This information is crucial for calculating the accurate volume to administer the prescribed dose.
Assuming the medication information sheet specifies:
After reconstitution with 1.2 mL diluent, the final concentration is 0.25 mg/mL.
Calculation (based on the assumed concentration):
Prescribed dose: 0.0625 mg
Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)
Volume to administer (mL) = 0.0625 mg / 0.25 mg/mL
Volume to administer (mL) = 0.25 mL (round to nearest hundredth)
Therefore, based on the assumed concentration after reconstitution (0.25 mg/mL), the nurse should administer 0.25 mL to the client.
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