A nurse is monitoring a client following the insertion of a peripheral intravenous catheter. Which of the following findings should indicate to the nurse that the client is experiencing phlebitis at the insertion site?

A. Purulent drainage: Purulent drainage indicates infection at the site, such as a local abscess, but is not the hallmark sign of phlebitis. Infection may develop secondary to phlebitis but is not the primary indicator. B. Blood leakage: Blood leakage around the IV site indicates infiltration or improper catheter placement, not phlebitis. It reflects mechanical issues rather than inflammation of the vein. C. Leakage of IV fluid: IV fluid leaking from the site also suggests infiltration or extravasation. While uncomfortable, it does not signify inflammation of the vein itself. D. Red streak: A red streak along the vein at the IV insertion site is a classic sign of phlebitis, reflecting inflammation of the vein wall. The streak may be accompanied by warmth, tenderness, and swelling, indicating the need to discontinue the IV and apply appropriate interventions.