A patient weighs 25 kg and the prescribed dose is 4 mg/kg per day. How many milligrams per day should be given?

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Multiple Choice

A patient weighs 25 kg and the prescribed dose is 4 mg/kg per day. How many milligrams per day should be given?

Explanation:
Calculating a weight-based dose means multiplying the prescribed amount per kilogram by the patient’s weight to obtain the total milligrams per day. Here, 25 kg × 4 mg/kg/day equals 100 mg per day. So the correct daily dose is 100 mg. The other options correspond to different per-kilogram doses for the same weight: 50 mg/day would be 2 mg/kg, 125 mg/day would be 5 mg/kg, and 150 mg/day would be 6 mg/kg.

Calculating a weight-based dose means multiplying the prescribed amount per kilogram by the patient’s weight to obtain the total milligrams per day. Here, 25 kg × 4 mg/kg/day equals 100 mg per day. So the correct daily dose is 100 mg.

The other options correspond to different per-kilogram doses for the same weight: 50 mg/day would be 2 mg/kg, 125 mg/day would be 5 mg/kg, and 150 mg/day would be 6 mg/kg.

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