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.)

To calculate the daily dosage of cefotaxime for a child who weighs 55 lb, first convert the weight to kilograms, knowing that 1 kilogram is equivalent to 2.2 pounds. The child's weight in kilograms is approximately (55/2.2) = 25 kg. Then, multiply the weight in kilograms by the prescribed dosage of 150 mg/kg/day. This results in a total daily dosage of 3750 mg.