For Patients & Caregivers : Reading time · 12 minutes

Your vascular accessis your lifeline.

Every hemodialysis session depends on one thing: a working access where the machine can connect to your bloodstream. Without it, dialysis isn’t possible. With the right one, well planned and well cared for, dialysis becomes part of life that fades into the background. This page explains every type of access — how it’s made, when it’s made, what can go wrong, and what you can do daily to protect it.

See the four access types How to protect your arm

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Why this matters

The most important medical decision on your journey.

If you are starting hemodialysis — or someone you love is — the single most important medical decision in the months ahead is what type of vascular access to create, and when.

Hemodialysis works by drawing your blood out of your body, cleaning it through a filter, and returning it. To do this, the machine needs a reliable way to take large volumes of blood out — around 300 to 400 millilitres every minute — and to return it just as quickly. Ordinary veins cannot handle these flows. They are too small, too deep, and too fragile.

So the surgeon creates a vascular access — a specially engineered point of connection between your bloodstream and the dialysis machine. There are four main types, and each has its place. The rest of this page walks you through every one of them.

The Four Access Types

Four ways to connect to dialysis.

Each access type is suitable for different patients in different situations. Your nephrologist, in conversation with the AKC vascular access team, will recommend the one that fits your anatomy, your timeline, and your dialysis plan. Here’s what each one is, and what it’s for.

Best Choice · Gold Standard

AV Fistula · AVF

A direct connection between your own vein and your own artery — usually in your forearm.

The surgeon makes a small incision on your forearm or upper arm and connects one of your veins directly to a nearby artery. Over the following weeks, the vein gradually enlarges and strengthens under the higher blood pressure — a process called maturation. Once mature, this enlarged vein becomes the point where dialysis needles enter and exit, three times a week.

Made of

Your own blood vessels

Maturation

6–12 weeks before first use

Lifespan

Years to decades if well cared for

Advantages

Lowest infection rate of any access type
Longest lifespan — often a decade or more
Best blood flow rates — better dialysis quality
No foreign material in your body
Best survival outcomes overall

Disadvantages

Needs time to mature — cannot be used immediately
Not everyone has veins suitable for AVF
Some fistulas fail to mature and need help
Visible bulge under the skin (cosmetic)

Alternative · When AVF not possible

AV Graft · AVG

A soft synthetic tube placed under the skin, connecting an artery to a vein.

When your own veins are too small, too damaged, or too deep to make a fistula, the surgeon places a soft synthetic tube (graft) under the skin of your arm, connecting an artery to a vein. The graft itself is what the dialysis needles enter — it acts as an artificial extended vein. Modern grafts are made from biocompatible materials and are well tolerated by the body.

Made of

Synthetic biocompatible tube

Maturation

2–3 weeks before first use

Lifespan

3–5 years typically

Advantages

Ready in weeks, not months
Works when veins are too small for AVF
Larger needling area
Reliable flow rates from the start

Disadvantages

Higher infection risk than AVF
Higher clotting risk than AVF
Shorter overall lifespan
May need repeated angioplasty over time

Bridge · Until permanent access is ready

Tunnelled Catheter · TDC / Permcath

A soft, flexible tube placed in a large vein in your neck or chest, tunnelled under the skin.

A tunnelled dialysis catheter (also called a permcath) is a soft tube placed in a large vein — usually the right internal jugular vein in your neck. One end sits inside a large vein close to your heart; the other end exits through your chest skin, where two ports (one for blood out, one for blood in) connect to the dialysis machine. A small cuff under the skin anchors the catheter and reduces infection risk.

Made of

Soft silicone dual-lumen tube

Ready

Can be used immediately

Intended for

Weeks to months — bridge only

Advantages

Can start dialysis the same day
No maturation period needed
No needles required for each session
Useful while AVF is maturing

Disadvantages

Highest infection risk of all access types
Lower blood flow than AVF or AVG
Cannot get the exit site wet
Not designed for long-term use
Can damage central veins over time

Emergency · Days only

Non-Cuffed Catheter · NCC / Temporary

A short-term catheter placed quickly for emergency dialysis — not designed for long-term use.

A non-cuffed catheter is placed when dialysis is needed urgently — often within hours. It’s a temporary measure, used when there is no time to plan a permanent access. The catheter goes directly into a large vein (jugular or femoral), with no cuff and no tunnel under the skin. It is only intended for the first 1–3 weeks of dialysis, while a tunnelled catheter or fistula is being arranged.

Made of

Stiff short-term plastic tube

Ready

Can be used within hours

Intended for

1–3 weeks maximum

Advantages

Lifesaving in emergencies
Can be placed within hours
Useful when no other access is possible right now

Disadvantages

Very high infection risk
Restricts movement
Must be replaced within weeks
Damages veins if left in place too long

The Access Hierarchy

Why fistula first — and what that means for you.

Across the world of nephrology, there is broad agreement on the order in which access types should be considered. This isn’t a marketing preference — it’s the result of decades of patient outcome data. An AV Fistula keeps patients healthier, on dialysis longer, and out of hospital more often than any other access type. This is the AKC clinical position too.

First choice — AV Fistula

The clinical gold standard for almost all dialysis patients. Best survival, best dialysis quality, lowest infection rate, longest lifespan. Always the first option that should be evaluated.

AKC Position

Aim for this for everyone who can have one.

Second choice — AV Graft

When your veins are not suitable for a fistula — too small, too damaged from previous IV lines, or too deep — an AV graft is the next best permanent option. Still significantly better than long-term catheter use.

AKC Position

Recommended only when AVF is not possible.

Bridge use only — Tunnelled Catheter

A tunnelled catheter is a bridge, not a destination. Use it while your AVF is maturing, while you’re waiting for graft placement, or temporarily after access failure. Every month on a catheter carries real infection and central-vein risks.

AKC Position

Always have a dated plan to move off it.

Emergency only — Non-Cuffed Catheter

Lifesaving for emergencies — acute kidney injury, sudden ESRD presentation, access failure with no immediate alternative. Used for days, not weeks. Then immediately transitioned to a tunnelled catheter or permanent access.

AKC Position

Replace within 1–3 weeks maximum.

The most important conversation you can have with your nephrologist before starting dialysis is: “What’s the plan to get me onto an AV fistula?” If the answer is vague, ask again. Catheters are bridges. Fistulas are destinations.

When to Create Your Access

Timing is everything.

The single most important predictor of starting dialysis on a fistula — rather than a catheter — is creating the fistula early enough. An AV fistula needs time to develop. If it is created too late, your first dialysis sessions will have to be through a catheter while it matures — with all the risks that brings.

The “Fistula First” timeline

From the moment your nephrologist starts planning, to your first dialysis session through your own fistula.

6 months before

Vessel mapping

An ultrasound of your arm to find the best vein and artery to use.

3–6 months before

Fistula creation

A short outpatient surgery at the AKC Vascular Access Centre.

6–12 weeks

Maturation period

The vein enlarges and strengthens; do not use yet.

At 6 weeks

Maturity check

Ultrasound and clinical exam to confirm the AVF is ready.

Ready

First cannulation

First dialysis through the fistula — with no catheter needed.

The goal: if your nephrologist anticipates you’ll need dialysis within the next year, your AVF should be created 3 to 6 months before that. This is called the “Fistula First” approach — recommended worldwide. It means your first dialysis session can happen through a mature fistula, with no catheter needed.

Maturation

What is maturation, and why does it take so long?

When the surgeon joins your vein to your artery, the vein suddenly receives high arterial pressure. Over weeks, the vein wall thickens, the channel widens, and the flow increases — until the vein can handle the volumes dialysis requires. This biological remodelling takes time and cannot be rushed. Trying to use a fistula before it’s mature damages it — sometimes permanently.

The Rule of 6

When is an AVF ready to use?

Doctors use a simple guideline called the Rule of 6 to decide if an AVF is mature enough for safe cannulation. All four conditions should be met:

≥ 6 weeks· since the surgery

≥ 6 mm· vein diameter

< 6 mm· depth from skin

> 600 mL/min· blood flow

The AKC Vascular Access Centre

Every access on this page is made here.

AKC runs a dedicated Vascular Access Centre — a clinical service focused entirely on creating, maintaining, monitoring, and salvaging dialysis access. From pre-operative vessel mapping through fistula creation to lifelong surveillance, this is the single team that walks alongside your access through every stage of dialysis.

Pre-operative vessel mapping

Detailed ultrasound mapping of every vein and artery in your arms to find the best possible location for your AVF — before any surgery is planned.

All four access creations

AVF and AVG creation, tunnelled catheter placement under ultrasound guidance, and emergency catheter insertion. The full range, in one centre.

Maturation tracking

Structured follow-up at 2, 4, and 6 weeks post-surgery to confirm your AVF is maturing well — and to intervene early if it isn’t.

Quarterly surveillance

Every three months, your access flow is measured and any narrowing is detected before it causes failure. The single most effective way to extend access lifespan.

Salvage interventions

When a fistula or graft starts to fail, the centre can perform angioplasty (balloon dilation), stenting, or surgical revision to restore function before access is lost.

Patient education

Every patient is taught how to monitor their own access daily — LOOK / LISTEN / FEEL — and given a clear plan for what to do if something changes.

What can go wrong

Complications — and what they look like.

Every type of vascular access can run into problems. Most of these problems can be fixed if caught early — sometimes with a simple angioplasty, sometimes with revision surgery, sometimes just with antibiotics. What matters most is recognising them quickly. Below are the complications you should know about, what they feel like or look like, and which access types they affect.

Stenosis · narrowing

A narrowing of the access vein or graft, usually where it joins the artery. Can develop over months. Causes reduced dialysis flow rates and prolonged bleeding after needle removal.

Affects: AVF, AVG · Treated by: angioplasty (balloon dilation)

Thrombosis · clot

The access suddenly clots and stops working. The thrill disappears. Can happen overnight. Usually preceded by stenosis or low blood pressure during dialysis.

Affects: AVF, AVG, catheters · Action: same-day intervention may restore flow

Infection

Redness, warmth, swelling, pus, or fever around the access site. Particularly serious in grafts and catheters. Can spread to the bloodstream if not treated quickly.

Affects: all access types (highest in catheters) · Treated with: antibiotics; sometimes access removal

Aneurysm · ballooning

Over years, repeated needling in the same spot can cause the vein wall to balloon out into a soft, pulsating swelling. Usually safe, but large aneurysms need monitoring and sometimes surgical repair.

Affects: AVF mostly · Prevention: rotating needle sites; “rope-ladder” cannulation

Steal syndrome

The fistula “steals” blood that should be going to your hand — causing cold fingers, numbness, weakness, or pain in the access hand. More common in older patients and those with diabetes.

Affects: AVF, AVG · Treated by: surgical revision to redirect flow

Bleeding after dialysis

Persistent oozing or fresh bleeding from a needle site after dialysis — or, rarely, sudden major bleeding from an aneurysm. Always apply firm direct pressure with a clean cloth and seek immediate help if bleeding does not stop.

Action: direct pressure for 10–15 minutes · never use tourniquets · call emergency if persistent

Central vein stenosis

A narrowing of the large veins in your chest — usually caused by past catheters. Causes swelling of the access arm, face, or neck. One of the strongest reasons to avoid catheters when possible.

Affects: patients with current/past catheters · Treated by: angioplasty · sometimes stenting

Failure to mature

Sometimes an AVF doesn’t develop properly — flow stays low, the vein stays small. Treatable in many cases with balloon dilation, accessory vein ligation, or other interventions to help it mature.

Affects: new AVFs · Treated by: assisted maturation procedures at the access centre

The single biggest predictor of whether a complication is fixable or catastrophic is how quickly it’s caught. Most stenoses, infections, and early thromboses are completely fixable when reported the same day — and irreversible when reported a week later.

Patient-driven monitoring

Look. Listen. Feel. Every day.

Your dialysis team checks your access at every session. But you have your access with you every minute of every day — and you are the first person who will notice when something changes. That is why every dialysis patient is taught the simple three-part daily check: look, listen, feel. It takes thirty seconds. It can save your access.

Look

Every Morning

Normal

The arm looks the same as yesterday. Vein visible. Skin colour normal. No swelling.

Tell us

Redness, swelling, warmth, pus, skin colour change, or new bruising — especially around needle sites or near a catheter exit.

Listen

Place Ear Near Fistula

Normal

A continuous “whooshing” sound — called a bruit — like running water. Steady throughout the heartbeat.

Tell us

Sound becomes weaker, intermittent, or stops entirely. Or starts sounding like a high-pitched whistle.

Feel

Light Touch on Fistula

Normal

A soft buzzing vibration — called a thrill — under your fingers. Continuous, like a purring cat.

Tell us

The thrill is weaker, gone, or feels like a strong pulse instead of a continuous buzz. This is the most important sign of a problem.

If the thrill stops, treat it as an emergency. A clotted fistula can often be re-opened — but only if you reach the access centre within hours. After 24 hours, the chance of saving it drops dramatically.

Safety rules

How to protect your access arm.

Once your AVF or AVG is created, your access arm is no longer an ordinary arm. It carries a lifeline that needs protecting from anything that could compress it, damage it, or introduce infection. These rules become second nature within a few months, but they need to be followed every single day — for as long as you are on dialysis.

Absolute Rules · Never Allow

Things nobody may do with your access arm.

No blood pressure cuff on the access arm — ever, in any setting
No blood draws from the access arm — even in hospitals or labs
No IV drips or injections in the access arm
No tight clothing, watches, or bangles on the access arm
No sleeping on the access arm — switch sides if needed
No heavy lifting with the access arm — especially in the first 6 weeks
No carrying shopping bags by hooking the handle in the access elbow
No tattoos, piercings, or skin treatments on the access arm

Daily & Safe · Do These

Good daily habits for access protection.

Wash the access arm gently with mild soap and warm water daily
Do the LOOK / LISTEN / FEEL check every morning
Exercise the arm with a soft squeeze ball (after maturation) — helps blood flow
Keep skin moisturised — dry skin cracks and lets infection in
Drink enough water — dehydration is a clotting risk
Treat your access arm gently in all situations — it is your lifeline
Tell every doctor and nurse you meet that you have a fistula — they should not touch that arm
Wear a medical alert bracelet on your other wrist, especially if you travel

When to call us immediately

Signs that cannot wait.

If you notice any of the following, call your AKC vascular access team the same day — even if it’s evening, even if it’s a weekend. Many access problems are completely fixable if caught within hours, and permanently damaging if caught a few days later. Trust your instinct — if something feels wrong, get checked.

Same-day medical attention

Call us immediately if you notice

For any of the following, do not wait for your next dialysis session.

The thrill is weak or absent for the first time
The bruit (whooshing sound) has stopped
Redness, warmth, or swelling around the access
Pus or unusual drainage from the access site
Fever, chills, or feeling unwell with any catheter
Persistent bleeding from the access site after dialysis
Sudden swelling of the access arm, hand, face, or neck
Cold, numb, painful, or bluish fingers on the access hand
Severe pain in the access arm or chest
Any change you cannot explain — trust your instinct

AKC Surveillance Programme

Regular checks — before problems show up.

Daily self-monitoring catches most sudden problems. But many access problems develop slowly, over weeks — a gradual narrowing that quietly reduces flow until one day the access fails entirely. The AKC quarterly surveillance programme catches these slow problems before they cause failure. It is, in our clinical view, the single most effective way to extend the life of any access.

What happens at each check

Quarterly access flow monitoring

Every three months, your dialysis access is measured at the AKC Vascular Access Centre. The team checks blood flow rate, vein diameter, depth, and any signs of narrowing — usually with a simple bedside ultrasound that takes 15 minutes.

Access flow measurement — using ultrasound dilution or doppler
Physical examination — thrill, bruit, vein course, skin condition
Trend review — comparing today’s flow with previous measurements
Cannulation site assessment — to detect early aneurysm formation
Early intervention if any concern is found — angioplasty, revision, or close follow-up

Why this matters

The single best thing you can do for your access lifespan

Most accesses that fail did not have to. The narrowing that eventually clotted them was developing for weeks before it became critical — and angioplasty at that earlier point would have prevented the failure entirely.

Detects problems weeks earlier than symptoms appear
Reduces unplanned hospital visits from access failure
Prevents emergency catheter placements
Extends average access lifespan measurably across the patient cohort
Free as part of your AKC dialysis care

Treat surveillance appointments like dialysis itself. Don’t skip them. Don’t reschedule them lightly.
Every quarterly check is a chance to keep your access alive for another year.

Your Lifeline Is Our Shared Responsibility

Want to know more?

Speak with an AKC nephrologist, find a centre near you, or download our patient guide to share with your family.

For quick contact :

74000 95950 info@apexkidneycare.com

Disclaimer: The information provided is for general awareness only and should not replace professional medical advice. Always consult your nephrologist for guidance specific to your condition.