my 17 yr old is having a gastroscopy (camera down throat) to check for coleiacs and other things next week. she's type 1 diabetic so they've said they'll see her first thing, booked in for 7.30am. She wants sedation as scared of gagging/being sick. How long will she likely be there, with sedation? A few hours? Longer? Will she get results the same day? The hospital were a bit vague except to say she can go first and defo have sedation. what's it like?