@klsmidwestmom -
You have gotten some very good advice already, but I just want to add one distraction method that has helped me through many anxious medical times.
I still have an IPod(!) where I have different playlists. I will plug in my headset and pick one of my favorites and rest listening to the music and even doze off. This helped me through gallbladder surgery and most of all sailed me through chemo! Somehow, getting the music right into your head with headphones makes a big difference.
Endoscopy is a breeze- a nice nap!