Caring for Your Dialysis Access: Fistula, Graft, and Catheter
Posted 16 Jul 2026 | Source:

For anyone on haemodialysis, the vascular access — the means by which blood is drawn out and returned during treatment — is often described as a lifeline, and with good reason. Without a well-functioning access, effective dialysis is not possible. Looking after your access well helps it last longer, work better, and avoid complications. This article explains how to care for the different types of access and the warning signs that should prompt you to seek help.

The three types of access

There are three main forms of haemodialysis access. An arteriovenous fistula, created by joining an artery to a vein in the arm, is the preferred long-term access, made from your own vessels. An arteriovenous graft uses a soft artificial tube to connect an artery and vein, used when a fistula is not possible. A central venous catheter is a tube placed into a large vein, often used when access is needed quickly or when a fistula or graft is not available. Each requires care, though the specifics differ, and catheters in particular need special attention because of their higher risk of infection.

Caring for a fistula or graft

For a fistula or graft, good care centres on protecting it and monitoring it. Protecting it means keeping the arm with the access safe from injury and pressure: not allowing blood pressure measurements or blood samples to be taken from that arm, avoiding tight clothing, jewellery, or watches on it, not carrying heavy bags over it, and not sleeping on it. Keeping the skin over the access clean, and clean before each dialysis session, helps prevent infection.

Monitoring means regularly checking that the access is working. A healthy fistula or graft has a constant buzzing sensation, called a thrill, which you can feel with your fingertips and which indicates good blood flow. You will be taught to check for this thrill regularly — often daily. If the thrill weakens, changes, or disappears, this can indicate a problem with the flow that needs prompt attention, as early intervention can often save the access. Checking your access becomes a simple daily habit that plays an important role in keeping it healthy.

Caring for a catheter

A central venous catheter requires particular care because it provides a direct route into a large vein, making infection a significant risk. The key principles are keeping the catheter and its dressing clean and dry, and not interfering with it. The dressing should be kept intact and dry — getting it wet, for instance while bathing, must be avoided unless you have been shown how to protect it. The catheter should only be handled by trained staff using sterile technique during dialysis. You should not touch or adjust it yourself beyond what you have been specifically taught. Because of the infection risk, any sign of infection around a catheter needs urgent attention, as covered below.

Warning signs to watch for

Knowing the warning signs that something is wrong with your access, and acting promptly, can prevent serious problems. For a fistula or graft, seek advice promptly if the thrill changes or disappears, if the access becomes painful, red, swollen, or warm, if there is any discharge, or if bleeding from a needle site does not stop in the usual time. For a catheter, seek urgent attention for redness, swelling, pain, or discharge at the catheter site, and for fever or chills, which can indicate a catheter-related infection that requires immediate treatment. In general, any fever or feeling of being unwell in someone with a dialysis access should be taken seriously, as access infections can become serious quickly.

Why access care matters so much

The reason access care receives such emphasis is that access problems are one of the most common causes of difficulty for people on haemodialysis. A blocked or failing access can interrupt dialysis and require procedures to restore it; an infected access, particularly a catheter infection, can cause serious illness. By contrast, a well-cared-for access can function well for a long time, allowing dialysis to proceed smoothly. The daily habits of protecting and checking your access, and the prompt reporting of warning signs, are therefore genuinely important to your health, not mere formalities.

Working with your dialysis team

Your dialysis team are expert in access care and are your partners in looking after it. They will teach you how to check and care for your particular type of access, examine it regularly themselves, and arrange tests or procedures if a problem is suspected. Never hesitate to raise a concern about your access with them, even if it seems minor — they would far rather check something that turns out to be fine than miss an early problem. Together with your own daily care, this partnership keeps your lifeline functioning well.

The takeaway

Your dialysis access is essential to your treatment, and caring for it well pays real dividends. Protect the access arm, keep the area clean, check a fistula or graft for its thrill regularly, keep a catheter clean and dry, and report warning signs — especially any sign of infection or any change in a fistula’s thrill — promptly. These simple habits, alongside the expertise of your dialysis team, help keep your access healthy and your dialysis running smoothly.

Good access care is central to successful dialysis. Your nephrologist and dialysis team can teach you how to care for your access and address any concerns. A video consultation is a convenient way to discuss access questions.