A nurse is preparing to administer digoxin 0.25 mg PO to a school-age child. Available is digoxin elixir 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

1. Determine the desired dose and the available concentration: Desired dose: 0.25 mg Available concentration: 50 mg/mL 2. Set up the calculation: We need to find out how many mL contain 0.25 mg of digoxin. We can use the following formula: (Desired Dose) / (Available Concentration) = Volume to Administer 3. Perform the calculation: 0.25 mg / 50 mg/mL = 0.005 mL 4. Round the answer: The answer is 0.005 mL. Since the question asks to round to the nearest whole number and use a leading zero if it applies, and not use a trailing zero, and since this number is less than 1, we add a leading zero. The answer is 0.005mL. Therefore, the nurse should administer 0.005 mL of digoxin elixir.