Final answer:
The nurse should administer 0.25 milliliters of naloxone hydrochloride to deliver the ordered dose of 0.1 milligram.
Step-by-step explanation:
The student has asked a dosage calculation question. The physician has ordered naloxone hydrochloride 0.1 milligram IV. Given that the vial is labeled 0.4 mg/mL, the nurse should administer a volume of naloxone hydrochloride that contains the ordered dose. To calculate the correct volume to administer, use the formula:
Dose ordered (mg) / concentration of drug (mg/mL) = Volume to administer (mL)
In this case, it would be:
0.1 mg / 0.4 mg/mL = 0.25 mL
Therefore, the nurse should administer 0.25 milliliters of the solution to deliver 0.1 milligram of naloxone hydrochloride.