A nurse is caring for a preschooler who has heart failure and a new prescription for furosemide 4 mg/kg every 8 hr. The child weighs 16 kg (35 lb). Available is furosemide oral solution 40 mg/5 mL. How many mL should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Calculation: Calculate the desired dose in milligrams (mg) per administration. Desired dose (mg) = 4 mg/kg × 16 kg = 64 mg. Available concentration of the medication = 40 mg/5 mL. Calculate the volume in milliliters (mL) to administer per dose. Volume (mL) = Desired dose (mg) / (Available concentration (mg) / Available volume (mL)) = 64 mg / (40 mg / 5 mL) = 8 mL.