A nurse preparing to administer heparin 10,000 units subcutaneous every 8 hr. Available i heparin injection 20,000 units/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Determine the desired dosage: The nurse needs to administer 10,000 units of heparin. Determine the volume per dose: The heparin injection contains 20,000 units per 1 mL. The nurse needs to administer 10,000 units per dose. To find the volume per dose: 20,000 units / 1 mL = 10,000 units / x mL Cross-multiplying gives us: 20,000x = 10,000 Dividing both sides by 20,000, we get: x = 0.5 mL