Overview

An arteriovenous (AV) fistula is a surgical procedure that makes a reliable access point for hemodialysis. An AV fistula is made by connecting an artery and a vein directly, usually in the upper arm or forearm. This connection strengthens the vein and allows more blood to flow through it, making it safe for repeated needle insertions during dialysis. AV fistulas are the best and longest-lasting option for dialysis access because they have a lower risk of infection and thrombosis than AV grafts or central venous catheters. The fistula needs time to grow before it can be used for dialysis.

Why It's Done
Patients with chronic kidney disease who will need long-term hemodialysis have an AV fistula made. Regular veins can't provide the high blood flow that is needed for effective dialysis. During dialysis sessions, the fistula makes it safe and easy to withdraw and return blood. It reduces the risk of complications and improves the effectiveness of dialysis for patients overall.

What to Expect?
Before surgery, the patient undergoes vein mapping using ultrasound to identify the best blood vessels. Blood tests and a medical exam make sure the patient is healthy enough for the procedure. AV fistula creation is usually done with or without mild sedation and local anaesthesia. The surgeon makes a small cut in the arm and connects an artery and a vein that are close by. Sutures are used to close the cut. The operation usually takes one to two hours and is often done on an outpatient basis. After the procedure, patients may feel a vibration or "thrill" at the site, which means that blood is flowing properly. It usually takes six to twelve weeks for the fistula to mature before it can be used for dialysis. Regular checks make sure it works right.

Recovery & Outlook
Most people heal quickly, with only mild swelling or pain at the surgery site. Patients are told not to lift heavy things with the hurt arm while it heals. A properly functioning AV fistula can last for many years and is the safest and most effective way to achieve long-term hemodialysis.