hey guys, i work in surgery as a nurse and a few tidbits might help...
they dont actually "take out" or remove anything at all. hernia is your intestines pushing thru the abdominal muscles. so they pop them in and sew up the abdomenal wall. very simple in terms of surgery and compared to all the other surgeries done.
ive seen tons and tons of surgeries and along with it anesthesia, and i know its always a risk, rest assured that the anesthesiologists are so careful about who is getting what and how much anesthesia do they require and so on. honestly that wouldnt be my biggest concern and be glad that you can go home that same day. ive seen some horror stories about what goes on when people have to stay in the hospital overnight, or for a few days....thats the scary and dangerous part, in my opinion. i would want to get out asap after surgery.
and as far as inadvertant farting post-operatively, i dont see how this could be because they dont do anything to the inside of your intestines...only thing i could think of is that if some gas and stuff couldnt flow thru right cause of the hernia before surgery, then all the free flow after might let the gases out, but that would be short term, not something that your would have for the rest of your life or something.
hope this insight has helped someone.