Hi Rachel @rwinney, There have been some posts on Connect where plasmapheresis has been mentioned. Here is a link to the different posts in multiple discussions - https://connect.mayoclinic.org/search/?search=Plasmapheresis. Are you thinking about getting a plasmapheresis treatment?

I found a description of the treatment on a Mayo Clinic - Myasthenia gravis Diagnosis & Treatment page here:
-- https://www.mayoclinic.org/diseases-conditions/myasthenia-gravis/diagnosis-treatment/drc-20352040

"Plasmapheresis (plaz-muh-fuh-REE-sis). This procedure uses a filtering process similar to dialysis. Your blood is routed through a machine that removes the antibodies that block transmission of signals from your nerve endings to your muscles' receptor sites. However, the good effects usually last only a few weeks, and repeated procedures can lead to difficulty accessing veins for the treatment.

Risks associated with plasmapheresis include a drop in blood pressure, bleeding, heart rhythm problems or muscle cramps. Some people develop an allergic reaction to the solutions used to replace the plasma."

There is also a YouTube video from Apr 6, 2010 by Brian Weinshenker, M.D., a Mayo Clinic neurologist, describes the process of plasma exchange in treatment .