2013 - first spine surgery:  I began to wake up during the surgery and was then "hit harder" with anesthesia.  In the recovery room as I was first coming to, I cracked a joke, laughed a little, and then stopped breathing.  I was given a full dose of Narcan to save my life.  The pain was excruciating and has never completely gone away.  I haven't had an adverse reaction since then, but I've also been on pain meds since then.  This is my biggest fear of the procedure - that once I have been re-set, will I then be at risk coming out of anesthesia?  Please keep a very close eye on me during this time as I can't afford to lose any more brain cells.  Thank you!