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 mL the child should receive per day, we need to calculate the total daily dose of ampicillin based on the prescription. The prescription is for 500 mg of ampicillin four times a day, so the total daily dose is: 500 mg × 4 times = 2000 mg/day The concentration of the suspension is 250 mg/5 mL, which means that there are 250 mg of ampicillin in every 5 mL. To find out how many mL the child should receive per day, we divide the total daily dose by the concentration: 2000 mg ÷ 250 mg/5 mL = 40 mL/day Therefore, the child should receive 40 mL of the ampicillin suspension per day.