I had an NG tube for nearly a week post op following my 1-step. The surgeon wanted to pull it at the first sign of bowel sounds, but I asked him to leave it in place, but just clamped for 24 hours before removing it. I wanted to be sure I tolerated it because I did not want to have it put back later.
Then once that day passed, the nurses were being slow about following the order, so I just pulled it myself after a few hours went by. They weren't too happy with me, but that is what they get when they have a surgical nurse as a patient!!
Any time you have intestinal surgery that is prolonged they put an NG tube in while you are out. Surgeons each have their own protocols about whether it stays in after you are awake.