If a nurse needs to administer 20 mg of furosemide and has a solution of 10 mg/mL, how many mL should the nurse prepare?

To determine how many mL of the furosemide solution the nurse should prepare, the total required dose of furosemide must be considered alongside the concentration of the solution. The concentration provided is 10 mg/mL, which indicates that each mL of the solution contains 10 mg of furosemide.

The nurse needs to administer a total dose of 20 mg. To find out how many mL are needed, the total desired dose (20 mg) should be divided by the concentration of the solution (10 mg/mL):

20 mg ÷ 10 mg/mL = 2 mL.

This calculation shows that to achieve the required dose of 20 mg, the nurse should prepare 2 mL of the furosemide solution. Thus, the correct amount to administer is 2 mL, aligning with the response given. This calculation process highlights the importance of understanding medication concentrations and dosing to ensure accurate administration.