The nurse is preparing to administer a suspension ampicillin labeled, 250 mg/5 mL, to a child with impetigo. The prescription is for 500 mg four times a day. How many mL should the child receive per day? (Enter numeric value only.)

To determine the amount of suspension the child should receive per day, we first calculate the dosage per administration. Since the prescription is for 500 mg and the suspension is 250 mg/5 mL, the child needs 10 mL per dose (because 500 mg divided by 250 mg/mL equals 2, and 2 times 5 mL equals 10 mL). As the prescription is four times a day, the child should receive 40 mL per day.