A nurse is preparing to administer furosemide 40 mg IV. Available is furosemide 10 mg/1 mL. How many mL should the nurse administer per dose?

To administer 40 mg of furosemide, the nurse will calculate the volume needed using the concentration of the available solution (10 mg/mL). Dividing the desired dose (40 mg) by the concentration (10 mg/mL) gives 4 mL.