Renal replacement therapy - dialysis and kidney transplantation

If the kidneys are no longer able to perform their function of poison and water elimination, their duties must be taken over elsewhere. Various methods of blood washing and the transplantation of foreign kidneys are available. In Germany, almost 80, 000 people are affected.

When will renal replacement therapy be used?

The answer is basically simple: whenever the kidney function is so bad that the person would develop urinary poisoning without therapy. The most common cause is chronic kidney failure, also known as chronic renal insufficiency in jargon. This is based on many possible triggers - first and foremost diabetes mellitus and high blood pressure.

In chronic renal failure, either a blood wash (dialysis) must be carried out lifelong or the patient receives a new kidney (kidney transplant). Renal replacement therapy is also used for acute renal failure. With dialysis, the time is bridged until the causative disease is overcome and the kidney function is restored. In addition, the blood wash is also used in poisoning to remove the harmful substances as quickly as possible from the body.

How does dialysis work?

The principle of all dialysis forms is the same: particles and water pass through concentration differences and / or actively exerted pressure on the other side of a membrane, where there is a replacement liquid (dialysate). In this way, urine-containing waste products and excess water can be removed from the blood. The membrane may be outside (extracorporeal) or inside (intracorporeal) of the body. A

On the first principle, hemodialysis, hemofiltration and hemodiafiltration, which use an artificial membrane, are based on the second, peritoneal dialysis, which uses the peritoneum as a membrane.

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