Final answer:
Dialysis is a continuous process performed several times a week for patients with renal failure. It is a temporary solution to remove waste materials from the bloodstream.
Step-by-step explanation:
Dialysis is a continuous process, as the osmosis of waste materials and excess water takes time. Typically, 5-10 lb of waste-containing fluid is removed in each dialysis session, which can last 2–8 hours and must be performed several times a week. Although some patients have been on dialysis for 30 or more years, dialysis is always a temporary solution because waste materials are constantly building up in the bloodstream. A more permanent solution is a kidney transplant.