A nurse is preparing to administer gentamicin 2 mg/kg IM to a school-age child who weighs 55 lb. Available gentamicin injection 40 is mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1.3"]
Step-by-step calculation:
The child's weight is 55 lb.
The medication dosage is 2 mg/kg.
The available medication concentration is 40 mg/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 × 2 mg/kg = 50 mg
Calculating the volume to administer:
Use the concentration of the medication: 50 mg ÷ 40 mg/mL = 1.25 mL
Rounding the answer: 1.25 rounds to 1.3 mL
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Related Questions
Correct Answer is ["3"]
Explanation
Step by step calculation:
The child's weight is 27 lb.
The medication dosage is 10 mg/kg.
The available medication concentration is 200 mg/5 mL.
Calculating the total dose in mg:
Convert the child's weight to kg: 27 lb ÷ 2.2 lb/kg = 12.27 kg
Calculate the total dose: 12.27 kg × 10 mg/kg = 122.7 mg
Calculating the volume to administer:
Use the concentration of the medication: 122.7 mg ÷ (200 mg/5 mL) = 122.7 mg ÷ 40 mg/mL = 3.0675 mL
Rounding the answer:
3.0675 rounds to 3 mL
Correct Answer is ["240"]
Explanation
Step-by-step calculation:
The nurse needs to administer 120 mL of sodium chloride.
The infusion time is 30 minutes.
Calculating the flow rate in mL/hr:
Convert the infusion time to hours: 30 minutes ÷ 60 minutes/hour = 0.5 hours
Divide the total volume by the infusion time: 120 mL ÷ 0.5 hours = 240 mL/hour
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