MissAdventure
Just to add: if you do decide on the sedation, you have to be very firm about it, because, at least in my experience, everything is geared towards not having it.
I agree. It was clear from my notes that I had had three units of sedation the first time (and knew nothing about it) but only two on the second occasion (when I was pretty much wide awake).
For the third, I made it very clear that I did not want the procedure to go ahead unless I was properly sedated. The consultant was very kind, and said she would give me 3 units and promised to top it up if necessary. There was no need, as I was 'under', and my notes reflect that.
I will need more endoscopies in future, and will ask again for three units, now that I know that that dose is the right one for me.