Upper GI Endoscopy

What is upper GI endoscopy?

Upper endoscopy enables a very profound examination of the lining of the upper part of gastrointestinal tract, which includes the esophagus, stomach and duodenum (first portion of the small intestine). It is performed using a thin, flexible tube called an endoscope, which has its own lens and light source, and will view the images on a video monitor. This examination is also referred to as upper GI endoscopy, esophagogastroduodenoscopy (EGD) or panendoscopy.

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Upper GI endoscopy

What are the indications for upper endoscopy ?

Upper endoscopy helps your doctor evaluate symptoms of persistent upper abdominal pain, nausea, vomiting or difficulty swallowing. It’s the best 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.

Upper endoscopy can be also used to obtain a biopsy (small tissue samples). A biopsy helps distinguishing between benign and malignant (cancerous) tissues. Remember, biopsies are taken for many reasons, and your doctor might order one even if he does not suspect cancer. For example, your doctor might use a biopsy to test for Helicobacter pylori, the 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 – this will cause you little or no discomfort. For example, your doctor might stretch (dilate) a narrowed area, remove polyps (usually benign growths) or treat bleeding.

What preparations are required?

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 as the timing can vary.

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.

Most medications can be continued as usual, but some medications can interfere with the preparation or the examination. Inform your doctor about medications you’re taking, particularly aspirin products or antiplatelet agents, arthritis medications, anticoagulants (blood thinners such as warfarin or heparin), clopidogrel, insulin or iron products. Also, be sure to mention any allergies you have to medications.

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What happens during and after 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.

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 you otherwise.

Your physician will explain the results of the examination to you, although you’ll probably have to wait for the results of any biopsies performed.

If you have been given sedatives during the procedure, someone must drive you home and stay with you. Even if you feel alert after the procedure, your judgement and reflexes could be impaired for the rest of the day.

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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. Perforation (a hole or tear in the gastrointestinal tract lining) may require surgery but this is a very uncommon complication. Some patients might have a reaction to the sedatives or complications from heart or lung disease.

Although complications after upper endoscopy are very uncommon, it’s important to recognize early signs of possible complications. Contact your doctor immediately if you have a fever after the test or if you notice trouble swallowing or increasing throat, chest or abdominal pain, or bleeding, including black stools. Note that bleeding can occur several days after the procedure.

If you have any concerns about a possible complication, it is always best to contact your doctor right away.

Understanding Upper Endoscopy.
American Society for Gastrointestinal Endoscopy 2015.®

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