I just had a TEE about a month ago. The spray tastes bad, but numbs your throat. Then they give you the Versed/ Demerol through the IV and you get sleepy.
I woke up in the recovery room really groggy. I slept another hour. I just couldn't wake up. They gave me four bags of saline to try to flush all the stuff out of my system. Everytime I would sit up I got dizzy and felt nauseous.
The nurse called my cardio and told him that I was having a hard time waking up, sitting up, etc. and he told her that they had to give me more meds than normal. They gave me enough to knock out a 200 lb man ( I am a little thing at 110 lbs) because I was "feisty." My doc said I kept taking the bite block out of my mouth when they were ready to start (this happened three times) and kept talking! They said they had never seen anything like it before-they were all laughing and found it really comical! I remember vaguely doing this too, but I thought I was dreaming.
So that was embarassing. Once I was finally able to get up and walk, I went to the bathroom and threw up twice. Once I did that I was ready to go home. Whole thing took about five hours. Most of that was after the TEE was done. It was a piece of cake and you won't remember the actual procedure, just going in and getting your throat sprayed.