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.
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.
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.
Alert your doctor if you require antibiotics prior to dental procedures, because you might need antibiotics prior to upper endoscopy as well.
What can I expect during upper endoscopy?
Your doctor might start by spraying your throat with a local anesthetic or by giving you 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 doesn’t interfere with your breathing. Most patients consider the test only slightly uncomfortable, and many patients fall asleep during the procedure.
What happens after the 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 be able to eat after you leave unless your doctor instructs otherwise.
Your doctor generally can tell you your test results on the day of your procedure; however, the results of some tests might take several days.
If you received sedatives, you won’t 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 possible complications of upper endoscopy?
Although complications can occur, they are rare when doctors who are specially trained and experience 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 disease, and perforation (a tear in the gastrointestinal tract lining). It is 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.
Important Reminder: The preceding information is intended only to provide general information and not as a definitive basis for diagnosis or treatment in any particular case. It is very important that you consult your doctor about your specific condition.
Source: The American Society for Gastrointestinal Endoscopy