Understanding EGD or Upper Endoscopy
What is upper endoscopy?
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. You might hear your doctor or other medical staff refer to upper endoscopy as upper GI endoscopy, esophagogastroduodenoscopy (EGD) or panendoscopy. If your doctor has recommended upper endoscopy, this article will give you a basic understanding of the procedure – how it’s performed, how it can help, and what side effects you might experience. It can not answer all of your questions, since a lot depends on the individual patient and the doctor. Please ask your doctor about anything you do not understand.
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Why is upper endoscopy done?
Upper endoscopy helps your doctor evaluate symptoms of persistent upper abdominal pain, nausea, vomiting or difficulty swallowing. It’s an excellent test for finding the cause of bleeding from the upper gastrointestinal tract. It’s also more accurate than X-ray films for detecting inflammation, ulcers and tumors of the esophagus, stomach and duodenum.
Your doctor might use upper endoscopy to obtain a biopsy (small tissue samples). A biopsy helps your doctor distinguish between benign and malignant (cancerous) tissues. Remember, biopsies are taken for many reasons, and your doctor might order one even if he or she does not suspect cancer. For example, your doctor might use a biopsy to test for Helicobacter pylori, bacterium that causes ulcers.
Your doctor might also use upper endoscopy to perform a cytology test, where he or she will introduce a small brush to collect cells for analysis.
Upper endoscopy is also used to treat conditions of the upper gastrointestinal tract. Your doctor can pass instruments through the endoscope to directly treat many abnormalities with little or no discomfort. For example, your doctor might stretch a narrowed area, remove polyps (usually benign growths) or treat bleeding.
How should I prepare for the procedure?
An empty stomach allows for the best and safest examination, so you should have nothing to eat or drink, including water, for approximately six hours before the examination. Your doctor will tell you when to start fasting.
Tell your doctor in advance about any medications you take; you might need to adjust your usual dose for the examination. Discuss any allergies to medications as well as medical conditions, such as heart or lung disease.
What can I expect during upper endoscopy?
Your doctor will start by spraying your throat with a local anesthetic and administer a sedative to help you relax. You’ll then lie on your side, and your doctor will pass the endoscope through your mouth and into the esophagus, stomach and duodenum. The endoscope does not interfere with your breathing, Most patients consider the test only slightly uncomfortable, and many patients fall asleep during the procedure.
What happens after upper endoscopy?
You will be monitored until most of the effects of the medication have worn off. Your throat might be a little sore, and you might feel bloated because of the air introduced into your stomach during the test. You will need to wait approximately one hour before attempting to sip some water. If you are comfortable in drinking water then you may start to eat some soft foods. Please give your body a chance to get acclimated to hard solid foods after you are comfortable eating and swallowing soft foods
Your doctor generally can tell you your test results on the day of the procedure; however, the results of some tests might take several days.
If you received sedatives, you will not be allowed to drive after the procedure even though you might not feel tired. You should arrange for someone to accompany you home because the sedatives might affect your judgment and reflexes for the rest of the day.
What are the possible complications of upper endoscopy?
Although complications can occur, they are rare when doctors who are specially trained and experienced in this procedure perform the test. Bleeding can occur at a biopsy site or where a polyp was removed, but it’s usually minimal and rarely requires follow-up. Other potential risks include a reaction to the sedative used, complications from heart or lung diseases, and perforation (a tear in the gastrointestinal tract lining). It’s important to recognize early signs of possible complications. If you have a fever after the test, trouble swallowing or increasing throat, chest or abdominal pain, tell your doctor immediately.