Life Expectancy of Total Renal Failure

What is the life expectancy of total Renal Failure? This question is concerned by nearly all patients with the condition. However, it is a really hard question to answer for it is determined by many factors.
In total Renal Failure, the kidneys can not excrete the toxins from body and produce essential hormone to maintain normal physiological activity. Thus, a myriad of symptoms and complications will appear one after another.
Heart failure is a major death cause of total Renal Failure. It is mainly attributable to the accumulation of potassium and HCY in blood. Although dialysis may be used to remove metabolic wastes, it does not work in clearing HCY which combined with proteins in blood. Meanwhile, excessive fluid build up in blood vessels, which will certainly put extra strain on heart.
Apart from heart failure, hydrothorax and uremic brain disease, etc are also life threatening conditions for the patients with Renal Failure. These complications of total Renal Failure are the major influencing factors in shortening the life expectancy of total Renal Failure.
Dialysis can prolong the life expectancy of total Renal Failure, but it can not cure the disease at all. Some studies reveal that those with previous complications have 70% survival rate after five years on dialysis. However, the survival rate in those with per-existing diseases range between 29%~46%.
Renal transplantation is another way to extend life expectancy of total Renal Failure. It can retrieve normal renal function. However, it is very hard to get a compatible donor. Also, some potential risks can be inevitable like rejection, side effects of immunosuppressive drugs, cancer, etc.
In total Renal Failure, the kidney tissues and cells damaged significantly. If the patients can receive proper treatment to stimulate the regeneration of new cells, the impaired renal function will be reversed. In this way, the life expectancy of total Renal Failure will be extended greatly.