What IV complication is associated with the inflammation of the vein and potential clot formation?

Phlebitis is the correct answer because it specifically refers to the inflammation of a vein, which can occur as a complication of intravenous (IV) therapy. This inflammation can lead to irritation of the vein, resulting in pain, redness, and swelling at the injection site. Additionally, phlebitis can lead to thrombophlebitis, where a clot forms in the inflamed vein.

In the context of IV therapy, phlebitis can happen due to several factors, including the type of IV solution used, the size and type of catheter, the duration of IV placement, and the patient's individual response. Recognizing phlebitis is important for nurses to ensure appropriate management, which may include discontinuing the IV and applying warm compresses to the site.

Other options, while they describe different IV complications, do not specifically relate to both inflammation of the vein and the risk of clot formation, making phlebitis the most accurate choice in this case.