I don't want to misinform you, however, it is my understanding that the duration of the gastric emptying test (in my case 90 min.) correlates to the time it takes a normal stomach to empty 50%. My former GI doc -- Mr. Personable -- kept saying I was "at 33%" w/o explaining what he meant. I kept prodding until he laid it out. "It would probably be more over time," he added. Which makes sense if you consider the following analogy: You and I take off from the same point at the same time, except you're driving a car and I'm on a skateboard. We stop after 1 min. You may have already reached the end of the block, while I'm only partway down the street. This gap would widen if we gave ourselves more time.
Please don't try to read too much into what the tech showed you. It's not your responsibility to be trained to do so, and what you saw could mean a lot of things. I know it must SUCK to have the burping back after a year of improvement since the wrap. My GI doc advised that I lay off raw veggies, fruit w/skin, nuts, and red meat (other than ground beef) for a while. High fiber foods are more difficult to digest for people with emptying probs. Personally, I think the idea is half-crocked b/c it's hard for me to believe that raw veggies are "bad" for anyone, but okay, I'll try it for a while. It might explain your salad issue. Since you're having the GB surgery this week, the natural reaction is to take care of it all -- including the dilation, if necessary -- in one fell swoop. However, you can always address that, if need be, sometime in the near future. Just make sure everyone is on board first, with all of the necessary tests performed. Have you ever asked point blank, "Look, Doctor, I want to know why I am burping. I thought it was the hernia but that's been taken care of so, please, tell me why or determine why ASAP"? From personal experience, I know it's sometimes easy for the physicians to dance around the issue. Maybe just keep asking, "Why am I burping and how can we fix it?" until someone gives you a straight answer.
If it turns out your emptying is delayed (let's hope not), make sure you get a percentage and evaluation of severity. At 33%, my problem is considered mild to moderate. It sure didn't feel moderate when I was lying on the floor, completely bloated and uncomfortable after 1/2 a piece of toast. The Zelnorm, thankfully, appears to be working now. On the alternative front, there is a Chinese herb mixture used by acupuncturists and such that is supposed to speed emptying. The name escapes me now. It's my belief that digestive enzymes prescribed by a naturopath (see Logan's recent post) would help as well. I always keep an eye out for possible alternative treatments, b/c I truly hate being on these meds, which make me feel toxic.