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Doctor insights on: Why Do Physicians Use Metal Needles To Access Dialysis Fistula

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Why do physicians use metal needles to access dialysis fistula?

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). ...Read more

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Dr. Quresh Khairullah
507 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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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. ...Read more

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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. ...Read more

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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 ). ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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