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Procedures

Upper endoscopy (EGD)

An upper endoscopy, also called an EGD (esophagogastroduodenoscopy), uses a thin, flexible camera passed through the mouth to examine the esophagus, stomach and the first part of the small intestine. It can diagnose and often treat problems in the same visit.

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Why it's done

  • Heartburn or reflux that persists despite medication
  • Trouble swallowing, or food that feels stuck
  • Upper abdominal pain, nausea or vomiting
  • Black stools, vomiting blood or iron-deficiency anemia
  • Screening or surveillance for Barrett's esophagus
  • Testing for celiac disease, ulcers or H. pylori infection

What can be done during the exam

Biopsies to check for inflammation, infection or precancerous change; stretching (dilation) of a narrowed esophagus; treatment of bleeding; and removal of polyps or swallowed objects.

How to prepare

Nothing to eat for about 6 to 8 hours before, with clear liquids allowed until a few hours before, per your instructions. Tell your doctor about blood thinners, diabetes medicines and GLP-1 injections, which can slow stomach emptying and may need to be held.

What to expect

You receive IV sedation and lie on your side. The exam usually takes 10 to 20 minutes. A mild sore throat or bloating afterward is common. You need a driver home and can usually eat later the same day.

Risks

Complications are uncommon. They include bleeding after biopsy or dilation, a tear in the lining, and reactions to sedation.

Common questions

Will I be able to breathe?

Yes. The scope does not block your airway, and your breathing and oxygen are monitored throughout.

When will I get results?

What we see is reviewed with you that day; biopsy results usually take about a week.

Questions about an upper endoscopy? Call (813) 400-0543 or send a message.

Dr. Brian Frank, MD
Written and reviewed by Brian Frank, MD
Board-certified gastroenterologist (ABIM). Last reviewed October 8, 2026.

This page is general information, not medical advice. For a medical emergency, call 911.