A nurse is preparing to administer a dexamethasone 1.5 mg/kg/day PO to divide equally every 6 hr to a preschool-age child who weighs 22 lb. Available is dexamethasone oral solution 1 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Convert the child’s weight to kg: 22 lb ×1kg/2.2lb = 10 kg Calculate the daily dose: 1.5 mg/kg/day × 10 kg=15mg/day Divide the total daily dose by the number of doses per day (every 6 hours): 15mg/day ÷ 4doses/day =3.75mg/dose Convert the dose to mL using the concentration: 3.75mg × 1 mL/1 mg = 3.75 mL Round to the nearest tenth: 3.75 mL≈ 3.8 mL Answer: The nurse should administer 3.8 mL per dose.