An upper endoscopy can be used to determine the cause of heartburn and is often performed as an outpatient procedure upper endoscopy uses a thin scope with a light and camera at its tip to look . Upper gi endoscopy is a procedure in which a doctor uses an endoscope a flexible tube with a camera to see the lining of your upper gi tract a gastroenterologist surgeon or other trained health care professional performs the procedure most often while you receive light sedation to help you relax. Upper endoscopy lets your doctor examine the lining of the upper part of your gastrointestinal tract which includes the esophagus stomach and duodenum first portion of the small intestine your doctor will use a thin flexible tube called an endoscope which has its own lens and light source and will view the images on a video monitor. For the purposes of endoscopy the upper gi tract includes the esophagus stomach and duodenum esophagogastroduodenoscopy egd or upper gi endoscopy ugie and the lower gi tract includes the anus rectum colon and cecum anoproctosigmoidocolonoscopy or lower gi endoscopy
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