I agree with the testing thus far, and it has been comprehensive.
If the symptoms are continuing, you may want to consider more specialized testing. This can include a 24-hr pH study to document the severity of GERD. And if present, and not response to PPIs, surgical options can be considered.
You can also obtain a gastric emptying scan, which can evaluate for gastroparesis, along with an esophageal motility study to exclude dysmotility.
These options can be discussed with your personal physician or GI consultant.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin Pho, M.D.
KevinMD.com
Twitter.com/kevinmd