What is the primary use of arteriovenous shunts?

Arteriovenous shunts are primarily used in hemodialysis, which is a treatment for patients with chronic kidney disease or acute renal failure. The purpose of the arteriovenous shunt is to create a reliable and accessible site for blood to be drawn and returned during the dialysis process.

In hemodialysis, blood must be removed from the body, filtered to remove waste and excess fluid, and then returned. The use of a shunt facilitates this by connecting an artery to a vein, allowing for increased blood flow and easier access. The increased blood flow is essential for effective dialysis, as it allows more blood to be filtered in a shorter period, promoting efficient removal of toxins and maintenance of electrolyte balance.

Other uses mentioned, such as providing circulatory support, infusing medications, and drawing blood samples, while relevant in other medical contexts, do not represent the primary purpose of arteriovenous shunts specifically. The focus on their role in hemodialysis underscores their importance in managing patients who require regular kidney replacement therapy.