Understanding Upper Endoscopy (EGD)

An upper endoscopy, also called an EGD (esophagogastroduodenoscopy), is a safe and common procedure that allows your doctor to look at the inside of your esophagus, stomach, and the first part of your small intestine. It helps diagnose and sometimes treat problems like heartburn, difficulty swallowing, abdominal pain, or unexplained nausea.

What to Expect

During the procedure, you’ll be comfortably sedated while your gastroenterologist gently passes a thin, flexible tube with a light and camera through your mouth. This allows them to see detailed images on a screen and, if needed, take small tissue samples (biopsies) for testing.

Before Your Procedure

You’ll receive clear instructions on how to prepare — typically avoiding food and drink for several hours beforehand. It’s also important to arrange for someone to drive you home afterward since you’ll still be a bit drowsy from sedation.

After Your Procedure

Mild throat soreness or bloating can happen but usually improves quickly. Your doctor will discuss results with you and answer any questions about the next steps for your care.