Esophagogastroduodenoscopy (EGD) is an examination of the lining of the esophagus, stomach, and upper duodenum with a small camera (flexible endoscope) which is inserted down the throat.
How the Test is Performed
You will be given a sedative and an analgesic (painkiller). You should feel no pain and not remember the procedure. A mouth guard will be inserted to protect your teeth and the endoscope. Dentures must be removed.
An intravenous line will be inserted into your arm to administer medications during the procedure.
You will be instructed to lie on your left side.
After the sedatives have taken effect:
- The endoscope is advanced through the esophagus (food pipe) to the stomach and duodenum . Air is introduced through the endoscope to enhance viewing.
- The lining of the esophagus, stomach, and upper duodenum is examined, and biopsies can be taken through the endoscope. Biopsies are tissue samples that are reviewed under the microscope.
- Different treatments may be performed, such as stretching or widening a narrowed area of the esophagus.
After the test is completed, food and liquids will be restricted until your gag reflex returns (so you don’t choke).
The test lasts about 5 to 20 minutes.
How to Prepare for the Test
Fasting is required overnight (6 to 12 hours before the test). An informed consent form must be signed. You may be told to stop aspirin and other blood-thinning medications for several days before the test.