i had a B/L MBB#2 by Pain Management Dr. the other day. They said I held my breath while he was trying to find the nerves in my Lumbar spine area to numb them or burn them. The nurses would not tell me what exactly happened. All I know is that it was extremely painful and he didn't tell me when he was placing the needles and the next thing I knew was that he and the nurses were telling me to breath. I got extremely nauseous and felt funny. The nurses tried to set me up but my color was ashen and pale.