Examples · Weight-based dose (mg/kg)
Worked example
Weight-based dose (mg/kg) - practice problem 14
A patient weighs 176 lb. The prescriber orders vancomycin 20 mg/kg/dose.
Weight176 lb
Ordered20 mg/kg/dose
Safe max20 mg/kg/dose
How many mg is the dose?
Answer: 1600 mg
Step-by-step solution
1. Convert the patient's weight to kilograms
176 lb × ( 1 kg ÷ 2.2 lb )
= 80 kg
2. Multiply weight by the ordered mg/kg
80 kg × ( 20 mg ÷ 1 kg )
= 1600 mg
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