Barbie I'm going through the same thing. IVIG hasn't never worked for me. I just finished 10 IVIG's and nothing. Went to neuro he cut my statin (for heart stents) and I feel a LITTLE better but we are starting process for Soliras. Waiting for shot. He said Rituxan was too rough for me since my case is very complicated (4 different antibodies). I wish you the best. Best thing for me is no breathing issues. Keep us posted.
Prayers
Mike