How many mL will the nurse administer if Haloperidol oral solution 5 mg is ordered and the available solution is labeled 4 mg/mL?

To determine the correct volume of the Haloperidol oral solution to administer, you need to use a straightforward dosage calculation method.

The order is for 5 mg of Haloperidol, and the available solution is 4 mg per mL. The essential step is to set up a proportion based on the concentration of the solution.

You can calculate the required volume with the formula:

Volume (mL) = Desired Dose (mg) ÷ Concentration (mg/mL)

Substituting the values into the formula gives:

Volume (mL) = 5 mg ÷ 4 mg/mL = 1.25 mL

When rounding to one decimal place, this result indicates that the nurse should administer 1.25 mL of the solution. While the choices provided don't explicitly list this volume, the closest reasonable option is 1.2 mL if rounding is taken into consideration, ensuring safe administration in practical scenarios.

This calculation emphasizes the importance of aligning the dosage with the medication concentration and demonstrates how to apply mathematical concepts in clinical settings.