Final answer:
Patients undergoing hemodialysis should be dialyzed in a hospital or special dialysis clinic, on an outpatient basis, because waste materials constantly build up in the bloodstream.
Step-by-step explanation:
According to the CDC, patients who are undergoing hemodialysis should be dialyzed in a hospital or special dialysis clinic, on a outpatient basis. Hemodialysis is a medical procedure in which blood is filtered externally through a machine. During dialysis, waste products and excess water are removed from the patient's blood before it is returned to the patient. The treatment is needed frequently because waste materials are constantly building up in the bloodstream.