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 prescribed dose per administration in milligrams (mg). Prescribed dose per administration (mg) = Desired dose (mg/kg/dose) × Weight (kg) = 4 mg/kg/dose × 16 kg = 64 mg. Step 2: Identify the available concentration of the furosemide oral solution. Available concentration of the furosemide oral solution = 40 mg / 5 mL. Calculate the volume in milliliters (mL) to administer with each dose. Volume per dose (mL) = Desired dose per administration (mg) / Available concentration (mg/mL) = 64 mg / (40 mg / 5 mL) = 64 mg × (5 mL / 40 mg) = (64 × 5) / 40 mL = 320 / 40 mL = 8 mL.