A nurse is administering azithromycin 10 mg/kg PO to a toddler who weighs 27 lb. Available is azithromycin suspension 200 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 ["3"]
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
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Related Questions
Correct Answer is ["1.2"]
Explanation
To calculate the dose:
Convert the child’s weight from pounds to kilograms:
1 kg = 2.2 lb
51 lb÷2.2=23.2 kg
Calculate the prescribed dose in mg:
0.1 mg/kg×23.2 kg=2.32 mg
Determine the volume in mL to administer:
The concentration of the medication is 2 mg/mL.
2.32 mg÷2 mg/mL=1.16 mL
Round to the nearest tenth:
1.16 = 1.2 mL
Correct Answer is ["3.5"]
Explanation
Convert the child’s weight from pounds to kilograms:
52 lb÷2.2=23.6 kg.
Calculate the total daily dose in micrograms (mcg):
7.5 mcg/kg/day×23.6 kg=177 mcg/day.
Determine the volume in mL to administer:
The elixir concentration is 50 mcg/mL
177 mcg÷50 mcg/mL=3.54 mL.
Round to the nearest tenth:
3.54 rounds to 3.5 mL.
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