The healthcare provider prescribes a loading dose of digoxin 0.6 mg intravenously (IV) for a client with heart failure (HF). The nurse obtains digoxin Injection 500 mcg in 2 mL vial from the electronic medication system. How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

The vial contains 500 mcg (or 0.5 mg) of digoxin in 2 mL. This means that each mL contains 0.25 mg of the medication (0.5 mg / 2 mL = 0.25 mg/mL). The nurse needs to administer 0.6 mg of the medication. To find out how many mL this is, we divide the dose by the concentration: Volume in mL = 0.25 mg/mL 0.6 mg / 0.25 mg/mL ​= 2.4 mL If rounding is required to the nearest tenth, the nurse should administer 2.4 mL of the medication.