About Haemodialysis

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Dialysis is a method of chemically removing excess fluid and wastes from your body, and is typically used when a patient suffers from severe kidney failure (also known as end-stage renal failure). In order to do this, access is necessary to either the abdominal cavity via a catheter (Peritoneal Dialysis or PD), or direct access to the bloodstream (Haemodialysis or HD).

In haemodialysis, blood is removed from the body and passed through a dialysis machine. After it has been processed and filtered, this blood is return to the body. This can be done either through a large plastic catheter placed into a central vein (usually via the neck and referred to as a Vascath or Permacath), or by placing needles into a large vein in the arm (fistula).

A surgical arteriovenous fistula is created by joining a vein to an artery. The increased pressure and blood flow into the vein causes it to grow and dilate, which makes it easier and more convenient to place a needle for dialysis.

 

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