Hello Thanks for query . Based on the facts that you have posted It seems that your mother has landed in Chronic Renal Failure (CRF) and your Dr has advised her to undergo Dialysis . Kidneys are the organs that are involved in maintaining fluid and electrolyte balance and throw away end products of protein metabolism (Urea and Creatinine )through urine .Kidney failure results in accumulating these end products which are poisons to our body These products have to be expelled out by means of using artificial kidney which is achieved by Dialysis .Dialysis expels these products in urine and lowers levels these products in blood and help to carry on normal bod functions . Since production of these products is a continuous process it is mandatory to undergo Dialysis fat frequent intervals Generally it has to be done every week or two (Not every six months)which depends upon the level of Urea and Creatinine in blood . There is no alternative to Dialysis Dr.Patil.