Dialysis Access & AV Fistula surgery in Hyderabad

Creating safe, durable lifelines for kidney dialysis patients — with specialist expertise in AV fistula formation, AV graft surgery, and catheter-based vascular access at CARE Hospitals, Banjara Hills, Hyderabad.

By Dr Rahul Agarwal, DNB, DrNB (Vascular Surgery) | CARE Hospitals, Banjara Hills | Medically reviewed: March 2026

When the kidneys fail and a patient needs haemodialysis They need reliable, repeated access to their bloodstream — two to three times every week, for years. Getting that access right is not an afterthought. It is one of the most important decisions in managing kidney failure, and it directly affects a patient’s long-term survival and quality of life.

As a vascular surgeon, creating and maintaining dialysis access is one of the most technically demanding and personally meaningful parts of my practice. The right access, placed at the right time, in the right patient, can make the difference between someone who thrives on dialysis and someone who is continually hospitalized with access complications.

Key Point

The National Kidney Foundation and Indian Society of Nephrology both recommend an arteriovenous (AV) fistula as the gold standard for haemodialysis access — it lasts longer, carries fewer complications, and protects the patient’s life. Creating a good fistula takes planning, timing, and vascular surgical skill.

What is Dialysis Vascular Access?

During haemodialysis, a machine filters your blood in place of your failing kidneys. To do this efficiently, it needs to withdraw and return large volumes of blood — typically 300–500 ml per minute — repeatedly and safely. You cannot achieve this through an ordinary vein or a standard IV drip. You need a specially created vascular access point.

There are three main types of dialysis access. Each has a specific role, and choosing the right one requires careful assessment of your veins, arteries, overall health, and how urgently you need to begin dialysis.

What is an AV Fistula — and Why Does It Matter?

An arteriovenous fistula (AVF) is created by surgically joining an artery directly to a nearby vein under the skin. Arteries carry blood at high pressure. When this high-pressure blood is redirected into the vein, the vein wall responds by thickening and expanding — a process called “maturation”. Over 6–8 weeks (sometimes longer), this vein becomes wide and robust enough to be punctured with dialysis needles reliably, session after session.

The result is a blood vessel you can feel buzzing under the skin — that buzz is called a “thrill”, and the sound heard with a stethoscope is called a “bruit”. These confirm the fistula is working. If you ever cannot feel that thrill, it is a medical emergency — the fistula may be clotting.

Common Fistula Locations

When Should You See a Vascular Surgeon? Timing is Critical

One of the biggest mistakes in kidney disease management — and I see this frequently in Hyderabad — is referring the patient to a vascular surgeon too late. Many patients arrive needing a dialysis catheter as an emergency because their fistula was never planned, or was created too close to when they needed to start dialysis.

Current guidelines recommend referring to a vascular surgeon when eGFR falls to 20–25 ml/min/1.73m² — well before the patient actually needs to start dialysis. This gives enough time for:

1. Vein mapping with Doppler ultrasound – Identifying the best vessels in both arms for fistula creation.
2. Fistula surgery — at least 3–6 months before dialysis – Gives the fistula enough time to mature and be tested before it is urgently needed.
3. Maturation monitoring – Confirming the fistula has reached adequate size and flow with follow-up ultrasound.
4. Early salvage if needed – If the fistula is not maturing well, balloon angioplasty or a revision procedure can often rescue it before it is needed for dialysis.

Who Needs Dialysis Access Surgery?

You will need dialysis access surgery if you have, or are approaching, end-stage kidney disease requiring haemodialysis. Common underlying conditions that lead to dialysis include:

• Diabetic nephropathy — the leading cause of kidney failure in India; diabetes damages the kidney’s filtering units over years
• Hypertensive kidney disease — long-standing high blood pressure damages kidney blood vessels
• Chronic glomerulonephritis — inflammation of the kidney’s filtering units
• Polycystic kidney disease — inherited condition causing kidney cysts and progressive failure
• Lupus nephritis and autoimmune conditions
• Recurrent kidney infections and urinary obstruction
• Acute kidney injury requiring temporary dialysis

What Happens During AV Fistula Surgery?

Before Surgery

I will review your blood tests, kidney function, blood pressure control, and medications. We perform a duplex ultrasound vein mapping of both arms — this is the single most important step in planning a successful fistula. The procedure is almost always done under local anaesthesia as a day-case surgery.

During Surgery

The procedure typically takes 45–60 minutes. A small incision is made over the chosen site (usually the wrist or inner elbow). The artery and vein are carefully identified and joined using fine sutures under magnification. You will feel the thrill immediately after the connection is made. The wound is closed and a dressing applied.

After Surgery — The Maturation Period

This is the most underappreciated phase of fistula care. The fistula needs time to mature — typically 6–8 weeks — before it can be used for dialysis. During this time:

• Check the thrill (buzz) daily — if it disappears, call immediately
• Perform fistula exercises (squeezing a soft ball repeatedly) to encourage the vein to grow
• Avoid blood pressure cuffs, tight clothing, and sleeping on the fistula arm
• Protect the arm from trauma; avoid needle punctures by anyone other than experienced dialysis staff
• Attend follow-up appointments to monitor maturation

Common Complications and How We Manage Them

Fistula Failure to Mature (Non-Maturation)

Few fistulas do not develop adequately on their own. This is more common in elderly patients, women, diabetics, and those with peripheral vascular disease. If a fistula is not maturing by 6–8 weeks, I evaluate it urgently with ultrasound. Many can be rescued with balloon angioplasty, ligation of competing side branches, or surgical revision of the anastomosis to a better site.

Fistula Thrombosis (Clotting)

he most common and urgent complication. The thrill disappears suddenly. This requires emergency treatment — surgical thrombectomy or catheter-directed thrombolysis and angioplasty. Time is critical — a clotted fistula treated within 24–48 hours has a much higher chance of salvage than one left for days.

Stenosis (Narrowing)

Progressive narrowing of the fistula vein leads to poor dialysis adequacy before the fistula actually clots. Regular monitoring at the vascular unit can catch this early. Treatment is balloon angioplasty, which is minimally invasive and can be repeated as needed.

Steal Syndrome

In some patients, the fistula “steals” so much blood from the arm that the hand becomes cold, painful, or numb. Mild steal is common and harmless; severe steal requires surgical correction — techniques like DRIL (distal revascularisation-interval ligation) or fistula banding restore hand blood flow while preserving the access.

Aneurysm Formation

Repeated needling in the same spot over years can cause the vein to balloon out. Most fistula aneurysms are harmless. However, if an aneurysm is large, rapidly growing, thinning at the skin surface, or showing signs of impending rupture, surgical repair is advised.

AV Grafts — When a Fistula Is Not Possible

Not every patient can have an AV fistula. In patients with very small or scarred veins — often those who have had multiple IV lines, previous fistula failures, or severe peripheral vascular disease — an arteriovenous graft (AVG) using a synthetic tube (usually ePTFE) can be the right choice.

Tunnelled Central Venous Catheters — A Bridge, Not a Solution

A tunnelled dialysis catheter (TDC) — placed into the internal jugular vein in the neck, with the exit site tunnelled under the chest skin — allows immediate dialysis. It is used when a patient needs to start dialysis urgently before a fistula has matured, or when all other options have been exhausted.

Dialysis Access Monitoring and Surveillance

A fistula or graft that is working today may develop a problem silently over weeks. Regular surveillance — physical examination, dialysis adequacy monitoring, and periodic ultrasound — can detect narrowing before they progress to thrombosis.

At each dialysis session, nursing staff should assess: the thrill and bruit, intra-access pressure measurements, whether target blood flow rates are being achieved, and any arm swelling or skin changes. I recommend a vascular surgeon clinic visit every 2 months — catching a stenosis and treating it with balloon angioplasty is far preferable to dealing with an emergency clotted fistula.

Warning Signs — When to Contact Your Vascular Surgeon

Know these warning signs and act on them without delay:

Frequently Asked Questions

How long does AV fistula surgery take, and will I be admitted to hospital?

The surgery typically takes 45–90 minutes under local anaesthesia. Most patients go home the same day — it is a day-case procedure. You will have a small dressing on the wrist or elbow and can return to light activity shortly after. I ask patients to rest the arm for a few days.

How long does it take for an AV fistula to be ready for dialysis?

A forearm fistula typically matures in 6–8 weeks; upper-arm fistulas can mature in 4–6 weeks. We confirm readiness with a follow-up ultrasound — the vein needs to be at least 6 mm in diameter with adequate blood flow. In patients with diabetes or older age, maturation takes longer, and we may perform a minor procedure to assist.

Can I use my fistula arm normally for daily activities?

Yes — most normal daily activities are fine. However, avoid: blood pressure measurements on that arm, tight jewellery or sleeves, sleeping with your weight on the arm, and heavy loading for extended periods. Protecting the fistula arm from pressure and trauma is a lifelong habit that significantly extends your access’s lifespan.

My fistula has not matured after 8 weeks. Is it a failure?

Not necessarily. A fistula that has not matured by 6–8 weeks needs urgent assessment — but many can still be rescued. I perform a detailed duplex ultrasound to identify the cause: a stenosis, a dominant side branch diverting flow, or an inflow problem in the artery. Balloon angioplasty or a minor surgical procedure can often bring a non-maturing fistula to maturity. Early assessment improves salvage significantly.

I have diabetes and small veins. Can I still have a fistula?

Yes, though it requires more careful planning. Diabetic patients often have smaller, thicker-walled veins more prone to non-maturation. Vein mapping is even more important in these cases. In some patients, an AV graft is the better choice. The important thing is to plan early — not to leave it until dialysis is urgently needed.

How long does an AV fistula last?

A well-functioning AV fistula can last for many years — even decades — with proper care and regular surveillance. AV grafts typically require more interventions over time. The patient’s own commitment to access care (monitoring the thrill daily, attending surveillance checks, protecting the arm) plays a major role in how long the access lasts.

Is AV fistula surgery covered under health insurance in India?

AV fistula creation and related procedures are generally covered under most Indian health insurance policies, government schemes including PMJAY/Ayushman Bharat, and corporate health plans. We recommend confirming coverage with your insurance provider before the procedure. Our team at CARE Hospitals, Banjara Hills can assist with pre-authorisation.

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📚 AV Fistula & Dialysis Access: Complete Patient Guide

Everything you need to know about living well with dialysis access — written by Dr Rahul Agarwal from clinical experience and organised by topic.

👤 Patient Essentials

• How to Check Your AV Fistula Every Day: Thrill, Bruit and Visual Inspection Guide
• AV Fistula vs AV Graft vs Dialysis Catheter: Which Is Right for You?
• 10 Things You Should Never Do with Your AV Fistula Arm
• How to Prepare Your Veins Before AV Fistula Surgery
• Can I Exercise with an AV Fistula? What’s Safe and What Isn’t
• Travelling with an AV Fistula: Tips for Dialysis Patients on the Move

⚠️ Complications & Emergency Guides

• My AV Fistula Thrill Has Gone — What Does It Mean?
• Signs of AV Fistula Infection: ER vs Clinic — A Decision Guide
• Steal Syndrome: When Your Fistula “Steals” Blood from Your Hand
• AV Fistula Not Maturing: Why It Happens and What Can Be Done
• Fistula Aneurysm: That Bulge on Your Arm — Should You Be Worried?
• Why Does My Arm Swell After Dialysis? Venous Hypertension Explained
• High Flow AV Fistula and Heart Strain: What Patients and Clinicians Need to Know

🏥 Procedures & Interventions

• What Is a Fistulogram? The Procedure That Saves Your Dialysis Access
• Buttonhole vs Rope Ladder Needling: What Every Dialysis Patient Should Know
• Dialysis Catheters Explained: Types, Placement, Care and When to Transition

📊 Clinical Reference & Guidelines

• The Complete Physical Assessment of AV Fistula: Look, Feel, Listen (Clinical Guide)
• KDOQI Vascular Access Guidelines 2019: What Changed and Why It Matters
• AV Fistula Maturation: What It Means, How Long It Takes, and What to Do If It Fails
• The Dialysis Diet: Practical Nutrition Guide for Kidney Patients on Haemodialysis

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Medically authored by

Dr Rahul Agarwal

MBBS, DNB, DrNB – Vascular Surgery

CARE Hospital outpatient centre, Banjara Hills, Hyderabad

Dr Rahul Agarwal is a Vascular & Endovascular Surgeon practicing at CARE Hospitals, Banjara Hills, Hyderabad. He specializes in dialysis access surgery, peripheral arterial disease, diabetic foot management, varicose veins, limb salvage, and complex endovascular interventions. He has performed a large volume of AV fistula creation, graft surgery, access salvage procedures, and catheter-based dialysis access.

Dr Agarwal believes strongly in early referral and pre-emptive access planning for all patients with chronic kidney disease. All content on this website is personally authored and reviewed by Dr Agarwal to ensure medical accuracy, clarity, and genuine patient value.

Medical Disclaimer: This page provides accurate, patient-friendly educational information about dialysis vascular access. It does not constitute personalized medical advice. Your treatment decisions should always be made in consultation with your nephrologist and vascular surgeon, who can assess your individual clinical situation. If you are concerned about your kidney health or dialysis access, please arrange a consultation promptly.