In medicine, dialysis (from Greek "dialusis", meaning dissolution, "dia", meaning through, and "lusis", meaning loosening)'s primarily used to provide an artificial replacement for lost kidney function (renal replacement therapy) due to renal failure. Dialysis may be used for very sick patients who've suddenly but temporarily, lost their kidney function (acute renal failure) or for quite stable patients who've permanently lost their kidney function (stage 5 chronic kidney disease). When healthy… (More on Dialysis)