The physician prescribes Medication \( V 0.2 \mathrm{mg} \) to be given intramuscularly, immediately. The medication label states Medication \( V 400 \mathrm{mcg} / \mathrm{mL} \). How many mL should the nurse prepare to administer the correct dose?

To determine the volume in milliliters that the nurse should prepare, we first convert the prescribed dosage from milligrams to micrograms. Since \(1 \ \text{mg} = 1000 \ \text{mcg}\), the prescribed dose \( V = 0.2 \ \text{mg} \) is equivalent to \( 0.2 \ \text{mg} \times 1000 \ \text{mcg/mg} = 200 \ \text{mcg} \). Now, using the concentration of the medication \(400 \ \text{mcg/mL}\), we can calculate the volume needed: \[ \text{Volume} = \frac{\text{Desired Dose}}{\text{Concentration}} = \frac{200 \ \text{mcg}}{400 \ \text{mcg/mL}} = 0.5 \ \text{mL}. \] So, the nurse should prepare \(0.5 \ \text{mL}\) to administer the correct dose.