A nurse is preparing to administer digoxin 7.5 mcg/kg/day PO daily to a school-age child who weighs 52 lb. Available is digoxin elixir 50 mcg/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 from pounds to kilograms: 52 lb÷2.2=23.6 kg. Calculate the total daily dose in micrograms (mcg): 7.5 mcg/kg/day×23.6 kg=177 mcg/day. Determine the volume in mL to administer: The elixir concentration is 50 mcg/mL 177 mcg÷50 mcg/mL=3.54 mL. Round to the nearest tenth: 3.54 rounds to 3.5 mL.