Worked example

Weight-based dose (mg/kg) — practice problem 6

A patient weighs 20 kg. The prescriber orders acetaminophen 5 mg/kg/dose.

Weight20 kg
Ordered5 mg/kg/dose

How many mg is the dose?

Answer: 100 mg

Step-by-step solution

1. Multiply weight by the ordered mg/kg
20 kg × ( 5 mg ÷ 1 kg )
= 100 mg

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