A nurse is preparing to administer digoxin 12 mcg/kg/day PO to be given in equal doses every 12 hours to a client who weighs 66 lb. Available is dig oxinelixir 0.05 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.)

Calculation: Convert the client’s weight to kilograms Weight = 66 ÷ 2.2 = 30 kg Calculate the total daily dose Total Daily Dose = 12 mcg × 30 kg Total Daily Dose = 360 mcg/day Convert mcg to mg 360 mcg = 0.36 mg/day Divide the total daily dose into two equal doses Dose per Administration = 0.36 ÷ 2 Dose per Administration = 0.18 mg per dose Identify the available concentration 0.05 mg/mL Calculate the volume to administer Volume = 0.18 ÷ 0.05 = 3.6 mL