A 24 kg patient is prescribed 100 mg/kg/day of ceftriaxone. What is the daily dose in milligrams?

A 24 kg patient is prescribed 100 mg/kg/day of ceftriaxone. What is the daily dose in milligrams?

• A. 2100 mg
• B. 2400 mg
• C. 2300 mg
• D. 2600 mg

Answer: (B)

Dosing meds often uses mg per kg per day, so you multiply the patient’s weight by the dose per kilogram to get the total daily amount. Here, the patient weighs 24 kg and the prescription is 100 mg/kg/day. Multiply: 24 × 100 = 2400 mg per day. That’s 2.4 g daily. The other numbers would require a different mg/kg dose, but with 100 mg/kg/day for 24 kg, the daily dose is 2400 mg.

Dosing meds often uses mg per kg per day, so you multiply the patient’s weight by the dose per kilogram to get the total daily amount. Here, the patient weighs 24 kg and the prescription is 100 mg/kg/day. Multiply: 24 × 100 = 2400 mg per day. That’s 2.4 g daily. The other numbers would require a different mg/kg dose, but with 100 mg/kg/day for 24 kg, the daily dose is 2400 mg.