A child who weighs 55 lb receives a prescription for cefotaxime 150 mg/kg/day IV in divided doses every 6 hours. How many mg should the nurse administer each day? (Enter numerical value only.)

Convert the weight to kilograms, knowing that 1 kilogram equals 2.2 pounds. The child weighs approximately 25 kilograms (55 ÷ 2.2). Then, multiply the weight in kilograms by the prescribed amount of medication, which is 150 mg/kg/day. So, 25 kg × 150 mg/kg/day equals 3750 mg/day.