Haemodialysis needs a way for blood to travel from the body to the dialysis machine and back. This connection is called vascular access. The type and timing are clinical decisions, and planning ahead can help the care team discuss an option that fits a patient's condition and treatment goals.
Here is a plain-language overview of the three common access types. It is educational and does not replace instructions from the clinician who examines your access.
Why access matters
For haemodialysis, access must support the blood flow needed by the prescribed treatment. The team considers your blood vessels, other health conditions, how soon dialysis is needed, expected treatment duration and your preferences.
Planning may involve a kidney specialist and a vascular surgeon. Ask who will assess the access, how it will be checked and which service to contact if you notice a change.
Fistula: using your own blood vessels
An arteriovenous (AV) fistula is created by surgically joining an artery to a vein, often in the arm. The increased blood flow can help the vein develop for dialysis use. It may take weeks or longer to mature, and not every fistula is suitable for every person.
Your care team can show you how they want the fistula checked and what precautions apply. Do not let a general checklist replace the centre's own instructions.
Graft: a connection made with a tube
An AV graft connects an artery and vein using a synthetic tube under the skin. A graft can sometimes be used sooner than a fistula, but it may have a different risk profile, including infection or clotting. The treating team explains whether it is appropriate and how it should be cared for.
Catheter: a flexible tube in a large vein
A dialysis catheter is placed into a large vein, commonly in the neck or chest. It can provide access quickly in some situations, but infection and flow problems are important concerns. Keep catheter care within the instructions from trained staff; never handle the line or dressing unless your team has taught you to do so.
When to contact the care team
Contact your dialysis team promptly if access looks red or swollen, feels unusually warm or painful, has discharge, bleeds unexpectedly, or if you develop fever or chills. Sudden heavy bleeding or severe illness requires urgent emergency help.
At each visit, ask the staff to check the access as part of your treatment and tell them about any changes since the last session. Access-related concerns should not wait for an internet diagnosis.
