A Patient with Rheumatoid Arthritis Is Scheduled for Plasmapheresis

A patient with rheumatoid arthritis is scheduled for plasmapheresis. She asks the nurse why they are going to do this procedure. In forming an answer the nurse must remember that the purpose of plasmapheresis is to

A) add medication to relieve pain symptoms.
B) remove plasma-containing components that may be causing the disease.
C) remove waste products such as urea.
D) add saline or albumin that lubricates joints.