What can I expect during upper endoscopy?

Sedation will be given before and during the procedure to help you relax and make you sleepy. You will lie comfortably on your left side. The doctor will pass the endoscope through your mouth and into the esophagus, stomach and duodenum. The endoscope does not interfere with your breathing. The scope blows air into the stomach to expand the folds of tissue making it easier for the physician to examine your stomach. You should experience little to no discomfort with this procedure.