Inadvertent defecation in Operation theater, due to various reasons — can be stopped immediately, with Opioid (Butorphanol 2 mg) + Atropine IV  ... Late enema, Inadequate Nil By Mouth orders, Gastroparesis Intestinal Paresis due to Diabetes, Lax sphincter, etc... Good Adequate Nil By Mouth ... allowing clear liquids only (only water, coconut water) 8 - 12 hrs + Enema 12 hrs before surgery — usually Prevent Inadvertent Defecation in OR ..BUT...

Some times when all other precautions fail — Good opioid dose ( Butorphanol 2mg IV ) + Atropine Iv  .. stop this Mess almost immediately .. Try this and share your Experiences ..