Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Here's how to calculate the volume of heparin the nurse should administer: 1. Heparin dose: 5,000 units (given) 2. Heparin concentration: 10,000 units/mL (given on the vial label) We need to find the volume (mL) containing the prescribed dose (5,000 units) of heparin. Calculation: Volume to administer (mL) = Dose (units) / Concentration (units/mL) Volume to administer (mL) = 5,000 units / 10,000 units/mL Volume to administer (mL) = 0.5 mL (round to nearest tenth as requested) Therefore, the nurse should administer 0.5 mL of heparin.