The nurse is administering heparin via the subcutaneous route. Which intervention should the nurse implement? 1. Prepare the medication using a 20-gauge, 1.5-inch needle. 2. After injecting the...

The nurse is administering heparin via the subcutaneous route. Which intervention should the nurse implement?

1. Prepare the medication using a 20-gauge, 1.5-inch needle.

2. After injecting the needle, aspirate and observe for blood.

3. After removing the needle, massage the area gently.

4. Check previous injection sites and administer in another area.