RNY and Colonoscopy prep

I had my RNY bypass 11/2014 and I had my 1st colonoscopy 03/21/22. I had to drink a bottle of Miralax and take 2 ducolax to prep but it didn't clean me out enough so I had to do a barium enema the next day. I wonder if my RNY had something to do with my prep not working? Does anyone have any information if RNY patient's have a different Colonoscopy prep. I had such a bad experience and I woke up twice during my procedure which I know has nothing to do with my RNY surgery.

I doubt your RNY had anything to do with it. There are several of us on here who've had successful colonoscopies.

My last colonoscopy was like that, though - I had to have only liquids starting two days before, and drink a bottle of magnesium citrate that night. The next day I had to start up on GoLytely (or whatever that stuff is called in the gallon bottle). Wasn't quite enough to clean me out. The doctor said afterward that I had "redundant colon" (an unusually long large intestine), so he noted that in my file so I could start the process earlier next time. That wouldn't have had anything to do with my RNY, but i was kind of wondering if maybe my colon was unusually long because I weighed almost 400 lbs at one time? Not sure. I'll ask next time I see someone who might have some insight on that. I just know the first colonoscopy I had, in 2010, was fine (although I weighed close to 400 lbs then, so I would have thought my colon would have already stretched, if that was in fact the cause). So..who knows?

well, then again, maybe it DOES have something to do with it. Just googled this:

https://pubmed.ncbi.nlm.nih.gov/34657191/

I had a Sadi DS which I'm sure caused an issue for colonoscopy. Normally I have a major bowel cleanout most mornings, and the day of the colonoscopy I didn't. I think the drinks and pills are not effective and in some ways interferes with the normal functioning of the altered digestive system.

I also think the early morning scheduling of the colonoscopy didn't help. I eventually had the colonoscopy about 8 months later but had to try different cleanout drinks and scheduled an afternoon procedure for more time to clear things out.

my first one was a morning procedure. The nurse clued me in to always choose an afternoon one since that way you don't have to drink all that awful prep in one evening - you do half the night before and the other half the next morning. So I did that the second time around. So much better!!