Canadian Pharmacist Qualifying Exam Practice · Question
A 5-year-old child, weighing 20 kg, requires a single dose of dexamethasone 0.6 mg/kg for croup. The available concentration is dexamethasone oral solution 1 mg/mL. How many milliliters should be dispensed for a single dose?
The total dose needed is 0.6 mg/kg * 20 kg = 12 mg. Given the concentration of 1 mg/mL, the volume to administer is 12 mg / (1 mg/mL) = 12 mL.
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Question: A 5-year-old child, weighing 20 kg, requires a single dose of dexamethasone 0.6 mg/kg for croup. The available concentration is dexamethasone oral solution 1 mg/mL. How many milliliters should be dispensed for a single dose?
Answer options:
- 6 mL
- 9 mL
- 12 mL ✅ 15 mL
Correct answer: 15 mL
Explanation: The total dose needed is 0.6 mg/kg * 20 kg = 12 mg. Given the concentration of 1 mg/mL, the volume to administer is 12 mg / (1 mg/mL) = 12 mL.
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