arteriovenoosseid

Arteriovenous fistulas, often abbreviated as AVFs, are abnormal connections between an artery and a vein, typically found in the extremities. These fistulas are formed when there is a direct communication between the arterial and venous systems, bypassing the capillary bed. AVFs are commonly used in hemodialysis patients as an alternative to the more traditional arteriovenous grafts. They are created surgically by connecting an artery and a vein, usually in the forearm or arm, to provide a reliable and long-lasting access for dialysis. AVFs are preferred due to their lower risk of thrombosis and stenosis compared to grafts. They are also less prone to infection and have a higher patency rate, which is the percentage of time the fistula remains open and functional. However, the creation of an AVF requires surgery and has a certain risk of complications, such as infection, bleeding, and nerve damage. The long-term success of an AVF depends on various factors, including the patient's overall health, the skill of the surgeon, and the proper care and maintenance of the fistula.