Dialysis may be used for very sick patients who have suddenly but temporarily , lost their kidney function -LRB- acute renal failure -RRB- or for quite stable patients who have permanently lost their kidney function -LRB- stage NUMBER@1 chronic kidney disease -RRB- .

Dialysis can be used for people who have become sick and have lost the use of their kidneys for a short time , or for people who no longer have working kidneys .
