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Esophagogastroduodenoscopy is the procedure, performed by testing stomach, duodenum, and esophagus with a flexible fiber-optic scope, and extracting small pieces of tissue for examination. This procedure starts by spraying the individual’s throat with a local anesthetic to suppress the gag reflex. The person is given more antispasmodic drugs and sedatives. In most cases one of the prominent veins on the back of the hand is used for intravenous injections. A mouthpiece with a hole in the middle for the scope is then inserted between the teeth. The scope is lubricated with a water-soluble jelly and inserted through the bite block down the throat and into the esophagus, stomach and duodenum. Usually biopsy specimens are taken as well and then the organs are examined through the magnifying eyepiece, and photos are done through the eyepiece as the devise is slowly taken out. Both the patient and doctor may watch the esophagogastroduodenoscopy procedure on TV due to some machines allowing connection of the eyepiece to a TV camera. Esophagogastroduodenoscopy may be performed by a gastroenterologist in a doctor office, outpatient or inpatient departments of a hospital.
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