A nurse is preparing to administer phytonadione 0.5 mg IM one time to a newborn. Available is phytonadione injection 1 mg/0.5 mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Desired dose: 0.5 mg Available concentration: 1 mg/0.5 mL Calculate the volume to administer in milliliters (mL). Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL) Determine the concentration in mg/mL: 1 mg/0.5 mL=2 mg/mL. Volume (mL) = 0.5 mg/2 mg/mL = 0.25 mL.