GI doctor update

Learned somethings from Ivee's gastroenterologist visit yesterday. Will begin to address her gagging and increased heart rate during feeding times by changing the way and how much we  feed her. Friday we will take her for a contrast dye study through her g button. We want to find out where the feeds go, as in reflux as well, and how quickly that her stomach empties. All issues are do to the nissen fundoplication pyloroplasty she had 4 years ago. For those unfamiliar with the procedures, a nissen fundoplication was done to help keep her from vomiting during chemo. Due to the paralysis of her vocal chord, they were very afraid of her aspirating. She also had reflux at the time, so they did the pyloroplasty to empty the contents of her stomach quicker. This is done by increasing the size of the opening to the small intestine. 
Emmett and I have read stories of people who had nausea problems after getting a fundoplication, so we are wondering if the "backing off" of the amount during feeds is going to assist in this gagging issue. And when I say gagging, it is not like the gagging we may all see in a child who doesn't like there food. It is violent, like a bad stomach virus heaving! 
Thanks for the prayers, and pray for a good and clear scan on Friday.