answered May 06, 2010 at 02:03AM
For a multiple of situations, hemodialysis can provide sufficient respite for the Kidney's to resume their independent function. A famous situation was when the Jack in the Box E Coli poisonings due to poorly cooked beef, caused renal failure in a number of individuals. Notably several young children whose toxemic levels caused multiple system failure. The dialysis allowed enough time for the blood levels to decline dramatically. This support allowed the blood to clear and for the kidneys to regain their function.
As to older individuals in this situation or others the result can be the same.
For End Stage Renal Failure the outcomes are much less favorable. However given enough time the reparative ability can be quite dramatic in a small subset of individuals.