The healthcare provider prescribes cefazolin 800 mg IM every 6 hours. The available vial is labeled, "Cefazolin 1 gram," and the instructions for reconstitution state, "For IM use, add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Here's how to calculate the volume (mL) of the reconstituted cefazolin solution the nurse should administer for each dose: 1. We know the following: Prescribed dose: 800 mg cefazolin (given) Vial information: Contains 1 gram cefazolin (given) = 1000 mg (since 1 gram = 1000 milligrams) Reconstituted with 2.5 mL sterile water for injection (given) Yields a total volume of 3.0 mL (given) 2. We need to find the concentration of cefazolin (mg/mL) in the reconstituted solution. 3. Then, we can find the volume (mL) to administer for the prescribed dose (800 mg) considering the concentration. Steps: a. Calculate the concentration after reconstitution: Total volume after reconstitution = 3.0 mL (given) Total amount of cefazolin after reconstitution = 1 gram (from the vial) = 1000 mg Concentration (mg/mL) = Total amount of medication (mg) / Total volume after reconstitution (mL) Concentration (mg/mL) = 1000 mg / 3.0 mL Concentration (mg/mL) = 333.33 mg/mL (round to one decimal place) b. Calculate the volume to administer: Volume to administer (mL) = Dose (mg) / Concentration (mg/mL) Volume to administer (mL) = 800 mg / 333.33 mg/mL Volume to administer (mL) = 2.4 mL (round to nearest tenth) Therefore, the nurse should administer approximately 2.4 mL of the reconstituted cefazolin solution intramuscularly every 6 hours.