AMSA Advanced Nursing 2 Complete Practice Test 2026

Phlebitis is the correct condition that involves the irritation of a vein, which can arise from various factors including chemical, mechanical, or bacterial causes. In the context of phlebitis, the irritation usually occurs within the walls of a vein, leading to inflammation.

For instance, chemical phlebitis may occur in response to the substances in intravenous (IV) fluids or medications, while mechanical phlebitis might result from the physical presence of a catheter or an infusion through a vein. Bacterial phlebitis can develop if bacteria enter the bloodstream or the vein, often due to poor sterile technique during IV placement.

The other conditions listed—thrombosis, infiltration, and necrosis—do not specifically refer to the irritation of a vein. Thrombosis involves the formation of a blood clot within a blood vessel, infiltration pertains to the unintended administration of IV fluids into surrounding tissue instead of the vein, and necrosis refers to tissue death often due to lack of blood supply or injury. Thus, phlebitis is directly linked to the inflammation and irritation of the vein, making it the appropriate choice.