A nurse is preparing to administer phenytoin 15 mg/kg PO to a school-age child who weighs 55 lb. Available is phenytoin suspension 125 mg/5 mL How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["15"]
Step-by-step calculation:
The child's weight is 55 lb.
The medication dosage is 15 mg/kg.
The available medication concentration is 125 mg/5 mL.
Calculating the total dose in mg:
Convert the child's weight to kg: 55 lb ÷ 2.2 lb/kg = 25 kg
Calculate the total dose: 25 kg × 15 mg/kg = 375 mg
Calculating the volume to administer:
Use the concentration of the medication: 375 mg ÷ (125 mg/5 mL) = 375 mg ÷ 25 mg/mL = 15 mL
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Related Questions
Correct Answer is ["1.6"]
Explanation
Step by step calculation:
The child's weight is 36 lb.
The medication dosage is 1 mg/kg.
The available medication concentration is 10 mg/mL.
Calculating the total dose in mg:
Convert the child's weight to kg: 36 lb ÷ 2.2 lb/kg = 16.36 kg
Calculate the total dose: 16.36 kg × 1 mg/kg = 16.36 mg
Calculating the volume to administer:
Use the concentration of the medication: 16.36 mg ÷ 10 mg/mL = 1.636 mL
Rounding the answer:
1.636 rounds to 1.6 mL
Correct Answer is ["400"]
Explanation
Step by step calculation:
The nurse needs to administer 100 mL of sodium chloride.
The infusion time is 15 minutes.
Calculating the flow rate in mL/hr:
Convert the infusion time to hours: 15 minutes ÷ 60 minutes/hour = 0.25 hours
Divide the total volume by the infusion time: 100 mL ÷ 0.25 hours = 400 mL/hour
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