A nurse is to give haloperidol lactate 3 mg IM from a solution of 5 mg/mL. What volume should the nurse administer?

To determine the volume to be administered, it's important to apply the formula that relates the dose, concentration, and volume. The nurse needs to administer 3 mg of haloperidol from a solution that has a concentration of 5 mg/mL.

The formula used is:

Volume = Dose / Concentration

In this scenario:

• Dose = 3 mg

• Concentration = 5 mg/mL

Plugging the values into the formula gives:

Volume = 3 mg / (5 mg/mL)

To solve this, divide 3 by 5:

Volume = 0.6 mL

This calculation aligns with the correct answer, which indicates that the nurse should administer 0.6 mL of the haloperidol lactate solution to achieve the desired dose of 3 mg. Understanding this calculation helps ensure proper dosing and safe medication administration.