An Arteriovenous Fistula (AVF) is a medical connection created between an artery and a vein. This procedure is often performed for patients requiring long-term dialysis, as it allows for easier access to the bloodstream. The AVF helps improve blood flow, making dialysis treatments more efficient. The creation of an AVF typically involves minor surgery, where a surgeon connects a nearby artery to a vein, usually in the arm. This connection causes the vein to enlarge and strengthen, providing a reliable site for needle insertion during dialysis. Proper care and monitoring are essential to ensure the AVF remains functional.