There are mainly two types of dialysis---hemodialysis and peritoneal dialysis. Also there are two types of kidney failure---acute kidney failure and chronic kidney failure.
Dialysis and acute kidney failure
If it is acute kidney failure which develops in very short time, dialysis can reverse renal damages and recover normal kidney functions along with other proper measures. The key point is to solve the underlying cause and treat acute renal failure completely or it will turn into chronic renal failure which is more difficult and requires much more time to be treated.
Dialysis and chronic kidney failure
In case of chronic kidney failure, dialysis can not cure kidney damages completely, weather it is hemodialysis or peritoneal dialysis. Chronic kidney failure usually develops over long period of time (months or even years). Dialysis can help relieve symptoms and complications by removing excess fluid and wasteful substances. It can slow down illness progression, but it can not prevent the trend of gradual losing of kidney functions.
Different from that in acute renal failure, in case of chronic renal failure the self-repairing ability of renal tissues have been severely affected or totally lost because they have been in this necrotic and damaged states for long time. While dialysis has no repairing or improvement on kidney functions, that is why illness conditions will continue to become worse and in some patients creatinine levels will remain to be high after dialysis. It is not only due to insufficient dialysis.
Though dialysis can not cure chronic kidney failure, patients will have to rely on dialysis to sustain their life when less than 10%-15% kidney functions are left. They will have to have dialysis for the rest of their life until more effective treatments are sought to recover their kidney functions.
More effective treatments for kidney failure
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