Canadian Pharmacist Qualifying Exam Practice · Question
A 6-month-old infant, weighing 7 kg, is prescribed amoxicillin for an ear infection. The recommended dose is 80-90 mg/kg/day divided every 12 hours. The pharmacy assistant enters the prescription as 'amoxicillin 250 mg/5 mL, 2.5 mL BID'. What is the daily dose the infant will receive, and does this fall within the recommended range?
The infant will receive 2.5 mL BID = 5 mL/day. At 250 mg/5 mL, this equals 250 mg/day. The recommended range is 80-90 mg/kg/day, which for a 7 kg infant is 560-
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Question: A 6-month-old infant, weighing 7 kg, is prescribed amoxicillin for an ear infection. The recommended dose is 80-90 mg/kg/day divided every 12 hours. The pharmacy assistant enters the prescription as 'amoxicillin 250 mg/5 mL, 2.5 mL BID'. What is the daily dose the infant will receive, and does this fall within the recommended range?
Answer options:
- 100 mg/day, within range ✅ 250 mg/day, within range
- 500 mg/day, above range
- 125 mg/day, within range
Correct answer: 250 mg/day, within range
Explanation: The infant will receive 2.5 mL BID = 5 mL/day. At 250 mg/5 mL, this equals 250 mg/day. The recommended range is 80-90 mg/kg/day, which for a 7 kg infant is 560-630 mg/day. Thus, 250 mg/day is well below the recommended therapeutic range.
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