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Doctor insights on: What Does A Dialysis Fistula Look Like

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What does a fistula for dialysis really look like?

What does a fistula for dialysis really look like?

A fistula: A fistula for dialysis is created by connecting a vein in the arm to an artery and giving it usually 6-8 weeks to mature. A good fistula is anatomically not visible but felt through the thrill and bruit it creates. So you should not be able to know the location of a fistula if it is well done.

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Dr. Quresh Khairullah
515 Doctors shared insights

Dialysis (Definition)

Simple answer is that it is a medical technology used primarily to provide an artificial replacement for lost kidney function in people with renal failure. Hemodialysis remove wastes and excess water from the blood by circulating blood outside the body through an external filter, called a dialyzer. Blood and dialysate flow through in opposite directions and the ...Read more


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What does a dialysis fistula actually do?

What does a dialysis fistula actually do?

"short circuit": A patient who is on dialysis needs the machine to clean toxins from the blood that the kidneys usually do. The patient's blood needs to get out of the body, through the machine, and back into the body. A dialysis fistula is made by sewing a vein to an artery. This short-circuits the blood flow and the vein becomes dilated because it experiences arterial pressures. This can be used for access.

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What does it mean to be fitted with a fistula for dialysis?

What does it mean to be fitted with a fistula for dialysis?

Surgery: Arm vein connected to arm artery. The vein is used for dialysis access once it has been allowed to grow in size (maturing).

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Dialysis shunt and dialysis fistula the same?

Dialysis shunt and dialysis fistula the same?

No: A shunt, or graft, is a piece of synthetic tubular material inserted under the skin that dialysis needles insert directly into. A fistula is a connection of your own artery to a vein. Needles are then placed into the vein when the wall thickness matures.

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What is the process of decloting an av fistula for dialysis patients?

What is the process of decloting an av fistula for dialysis patients?

Two methods: There are two methods: mechanical or chemical. Occasionally both methods are used. In general, the doctor accesses the av graft or fistula with a needle and places a tube into the graft. He then uses wires and catheters to cross the clot and inject clot busting meds. There are devices he can use that also break up clot. Or, he can open the graft and use special balloons to pull clot out.

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How does a fistula work to dialysis patient?

Arterial Diversion: When an artery is connected to a vein, the vein walls thicken and become muscular (due to the new high arterial pressure). This makes finding the vein easier. More importantly, the large bore needles can be removed and pressure held, with clot forming in the muscular walls, to stop the bleeding. If the veins weren't muscular, putting the needle in and taking it out safely, aren't possible.

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How long after dialysis fistula can you go swimming? '

Wound healing: Once the surgical site has healed, you can go swimming. Should be about 2-3 weeks. Get a final ok from your surgeon.

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What does an av fistula for dialysis mean?

What does an av fistula for dialysis mean?

Arteriovenous fistul: It is an arteriovenous fistula. It is a surgical connection of an artery and a vein. Once "mature", it is where they insert the needles for the blood to flow to the dialysis machine. It can take 3 months or so from "creation" until it is ready to use.

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Should bloodpressure be taken in arm where fistula made for dialysis?

Should bloodpressure be taken in arm where fistula made for dialysis?

No: If you take BP and tighten a cuff above the fistula, clotting can occur and clog the fistula. Distally, there is already a steal of blood flow due to the fistula so you don't want to tighten a cuff there unless there is nowhere else to go.

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Why is it that if a dialysis patient has a ruptured fistula and is haemorrhaging, you shouldn't place a torniquet proximal to the haemorrhage?

Why is it that if a dialysis patient has a ruptured fistula and is haemorrhaging, you shouldn't place a torniquet proximal to the haemorrhage?

Direct pressure: Hold direct pressure over the leak try to control without clotting the entire fistula or graft, so that it may be salvaged. Tourniquet may stop the bleeding if high enough pressure but may clot the fistula and require more extensive repair. Call 911 and get help and transport.

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How do physicians de-clot an av fistula for dialysis patients?

How do physicians de-clot an av fistula for dialysis patients?

Open or endo: It can be done with tpa (alteplase) (a high-potency medication to dissolve blood clot) and a rotor-rooter device inserted through a needle stick in the access. I tend to make a small incision to remove the clot with a balloon catheter, then do an angioplasty on the area of stenosis (narrowing) which you usually find in the vein or graft.

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On dialysis patient having some problems all fistula are failed and both juglar are block and capd also non working further what I do I m a tech pl?

Transplant?: Are you a transplant candidate? If not and you need hemodialysis an interventional radiologist can likely evaluate you for and subsequently place a dialysis catheter directly into your inferior vena cava. Check with your nephrologist or surgeon for an appropriate referral.

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Why do physicians use metal needles to access dialysis fistula?

It is less traumatic: Usually specially-trained nurses or technicians access dialysis fistulas, not physicians. Metal needles are used to help penetrate the skin and the thickened wall of the vein accurately and with minimal trauma. Sometimes blunt needles are used (if a buttonholing technique is being employed).

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What is the purpose of a AV fistula for dialysis patients? I can't find anything good on the internet to explain this, please add link if you have one

High flow: An A-V fistula creates a peripheral region of high blood flow so that a large volume of blood can be removed and returned to the body for the "cleaning" done by the dialysis machine.

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Is there a cosmetic procedure to remove the bumps on the arm caused by a dialysis fistula?

Depends on cause: Bumps must be looked at to determine their nature. Cannot answer without seeing and palpating the sites.

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During dialysis why does the subclavian catheter have darker blood than in patients with a fistula?

Venous blood: A subclavian catheter has only venous, deoxygenated blood returning from the body. A fistula contains oxygenated arterial blood coming from the heart. This is the reason for the bright red blood seen in fistulas.

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For a dialysis, why is the subclavian catheter has darker blood rather than in patient with fistula?

For a dialysis, why is the subclavian catheter has darker blood rather than in patient with fistula?

Catheter vs fistula: An a-v fistula (avf) is a connection between an artery and a vein, that's why its called an a, for artery, v, for vein, fistula. Arterial blood has more oxygen, making it redder, than venous blood. A subclavian catheter has both blood tubes in the vein, where there is less oxygenated blood, as it does not have any arterial inflow. That's why it has darker blood than an avf.

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I am a dialysis patient for 2 yrs. I lift 5 to 10 pds of weights, is it okay for my av fistula. And what can I take to build muscle?

I am a dialysis patient for 2 yrs. I lift 5 to 10 pds of weights, is it okay for my av fistula. And what can I take to build muscle?

AVF and weights: The answer to your question about lifting weights being ok for your avf is "yes". You need to speak to your renal dietician about what you can eat to build up muscle. Good luck.

Fistula (Definition)

A fistula is an abnormal connection between two places. Most commonly, it originates somewhere in the intestine and communicates to another location in the intestine or in the skin. A fistula can develop after abdominal surgery, with inflammatory bowel disease, cancer, anorectal abscess, and ...Read more