DIALYSIS. Chronic kidney failure means that the kidney function is in the range of less than 10-15% depending on the patients general condition and presence of absence of diabetes. There is no actual treatment that makes the kidneys better. So dialysis needs to be initiated to assist in removing the waste that the failing kidneys could not remove.
Eval, Prevent, Replace. First there is an evaluation for reverible cause of renal failure. If no reversible cause found or treatment fails to recover function... Then goal becomes preventing the lose of the remaining residual kidney function... If that ultimately fails and a person develops symptoms, then kidney replacement therapy is offered: hemodialysis, peritioneal dialysis, and kidney transplant.