Hello Jappy,
I'm so sorry that you are having to go through this. That autonomic neuropathy is a real problem because it affects the Vagus nerve; which controls everything in the abdomen and chest. To have an upcoming surgery as well is a very tough row to hoe.
If you can see past the worry, be happy that the problem was detected and that the intestines will be well taken care of during surgery, so you will have fewer problems in the future.
Most certainly you are in my thoughts and prayers now and until we hear back that all is well
.
With love, Erika