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There was w recent description of a biopsy preformed on an adult.  The
practise of and the experience of having an endoscopy differ
significantly from individual to individual and from country to country.
The person from the Netherlands described a endoscopy done without
sedation.  The use of sedation can dramatically alter the perception and
recollection of the proceedure.  This of course can alter the way people
feel about having it done.  Other factors such as supportive staff, size
of the scope, local anaesthesia, preparedness of the patient, anxiety and
health status all play a part in the experience.
The use of sedation for routine endoscopy varies from country to country
and from practise to practise. In the US currently most endoscopy would
be done with sedation. Modern sedating drugs aim to induce relaxation,
and often amnesia for the event.  The patietns are conscious in the sense
that they can follow verbal requests, breath on their own and protect
their airway.
If you are to have a biopsy talk to the endoscopist methods to make it as
little uncomfortable as possible.
Not Medical Advice
Joe Murray