A dose calls for 40 mg/kg; the patient weighs 22.2 kg. What is the correct dose?

A dose calls for 40 mg/kg; the patient weighs 22.2 kg. What is the correct dose?

• A. 222 mg
• B. 444 mg
• C. 1776 mg
• D. 888 mg

Answer: (D)

Dosing per kilogram means you multiply the dose per kilogram by the patient’s weight in kilograms to get the total dose. Here, the per-kg dose is 40 mg/kg and the patient weighs 22.2 kg, so multiply 40 by 22.2. 40 mg/kg × 22.2 kg = 888 mg So the total dose is 888 mg. This matches the calculation, and the other numbers come from incorrect arithmetic or using a different per-kg dose, not from the correct 40 mg/kg.

Dosing per kilogram means you multiply the dose per kilogram by the patient’s weight in kilograms to get the total dose. Here, the per-kg dose is 40 mg/kg and the patient weighs 22.2 kg, so multiply 40 by 22.2.

40 mg/kg × 22.2 kg = 888 mg

So the total dose is 888 mg. This matches the calculation, and the other numbers come from incorrect arithmetic or using a different per-kg dose, not from the correct 40 mg/kg.