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A 20 kg pediatric patient needs ampicillin 50 mg/kg/day every 6 hours. What is the correct single dose?
Correct Incorrect Total daily dose = 20 kg 50 mg/kg = 1000 mg. Divided every 6 hours (4 doses) = 1000 mg 4 = 250 mg per dose. Accurate weight-based dosing prevents toxicity.