Kidney failure can occur due to diabetes, high blood pressure, infection or other reasons. If the body is unable to regulate the body's salt and water content and remove urea and waste products death will ensue.The treatment for kidney failure is dialysis or kidney transplant surgery. Patients with transplanted kidneys need to be given immunosuppressant drugs.Dialysis is the most common treatment. Waste products, excess fluid and salts are removed by passing blood over a dialysis membrane. This allows the exchange of substances between the blood and dialysis fluid which contains the correct amount of substances dissolved in the blood plasma.