If the adult dose of a medication is 250 mg, how much medication should be given to a child who is 48 months old?
50 mg
62.5 mg
75 mg
82.5 mg
62.5 mg
Rationale: The 48-month-old child should receive 62.5 mg. To solve this, use Young's rule. Remember that 48 months = 4 years. The pediatric dose equals the child's age in years / the child's age in years + 12, multiplied by the adult dose. Therefore, 4 / 4 + 12 = 4/16, reduced to ΒΌ, multiplied by 250 mg = 62.5 mg.
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