A 50-pound child is prescribed cephalexin 75 mg/kg/d in four divided doses for otitis media. How many milligrams should be administered per dose?
A) 426
B) 563
C) 938
D) 1705

Question

Quizplus · Accepted Answer

The child weighs 50 pounds. First, convert pounds to kilograms (1 kg = 2.2 pounds). 50 pounds / 2.2 = approximately 22.73 kg. The prescription is for 75 mg/kg/day. So, 22.73 kg * 75 mg = 1702.25 mg per day. Since the medication is to be given in four divided doses, divide 1702.25 mg by 4 = 425.56 mg per dose, which rounds to 426 mg.

A 50-Pound Child Is Prescribed Cephalexin 75 Mg/kg/d in Four