My doc wanted an upper GI with barium....which I promptly flunked. LOL. Had "abnormalities", so I had to go in for an endoscope. Found out I had chronic gastritis and had biopsies taken to make sure I wasn't carrying the ulcer bacteria. I was not.
He also wanted an EKG, Chest films, and a lot of blood work.
I think most of this is pretty standard.
I know that if there are any abnormalities on anything...you get sent for sleep studies and stress tests and cardiologists and stuff....just to be sure you're safe and that everyone is prepared for your particular health issues.
I felt very safe with my doc....he was all about looking before you leap and having a good strategy plan for each person's health issues. I liked that he was thorough and made the surgery as safe as possible.