A child who weighs 44 pounds with otitis media receives a prescription for azithromycin 10 mg/kg once, then 10 mg/kg daily for 4 days. The medication is available in a solution containing 200 mg/5 mL. How many mL should the nurse administer on the first day of the treatment regimen? (Enter numeric value only.)

Calculation: Convert the patient's weight from pounds (lb) to kilograms (kg). Patient weight (kg) = 44 lb / 2.2 lb/kg = 20 kg. Calculate the total dose in milligrams (mg) for the first day. Total dose (mg) = Patient weight (kg) x Ordered dose (mg/kg) = 20 kg x 10 mg/kg = 200 mg. Available concentration. Available concentration = 200 mg / 5 mL = 40 mg/mL. Calculate the volume to administer in milliliters (mL). Volume to administer (mL) = Total dose (mg) / Available concentration (mg/mL) = 200 mg / 40 mg/mL = 5 mL.