I am rec ng ivig 90 over 3 days for sarcoidosis of the bone, lots of pain and nerve problems, my bp dropped to 60/30 during infusion, pre infused with 500cc ns also my heart rate tends to be 88-94 on avg at rest, just would like know a opinion regarding above.
I think you are having immunological reaction or allergy to IV that's why low BP.  Take anti allergy tablet before such infusions.