In 1995 I had surgery (called a Nissen) to reduce GERD.. it was botched in Central Iowa.... after losing 50 pounds in 2 months I went to Mayo MN where the GI doctors gave me 3 tests in a day.. the stomach emptying test found that it took many hours for the standard meal to get through the stomach.. diagnosed as "post operative gastropanesis...".. there had been damage to the hair net like system of nerves that empty the stomach.. Mayo gave me a way to cope.. the condition is not fixable..