What is the volume required for administering naloxone 0.4 mg if the concentration is 0.2 mg/mL?

To determine the volume of solution required to administer naloxone, the concentration of the medication and the desired dosage must be taken into account. In this case, you need to administer 0.4 mg of naloxone, and the concentration available is 0.2 mg/mL.

To find the appropriate volume, you can use the formula:

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

Plugging in the values:

Volume = 0.4 mg / 0.2 mg/mL = 2 mL

This calculation demonstrates that to achieve a dose of 0.4 mg, you will need to administer 2 mL of the naloxone solution at the given concentration. Thus, the volume required for administering naloxone 0.4 mg is indeed 2 mL.