Heartburn after Barium Drink
I had heartburn and reflux pre-op, so it would be hard to pin point it to any Barium drinks I had. I was nauseous after surgery, so I can't blame the post op barium drink to that either. The good news for me after RNY is that I have never been bothered by heartburn or reflux again. Since you're still pre-op, you're still normally gutted, so your regular doc should be able to help with these symptoms.
Kat