: Diagnostic Endoscopy Procedure

: What This Procedure Is

: An endoscopy uses a thin, flexible instrument called an endoscope, which has a light and a small camera at its tip. The doctor guides it through a natural opening, such as the mouth, to see the inside surfaces of the upper digestive tract. The specific area examined depends on why the test was ordered.

: Why It Is Done

: Endoscopy is commonly used to investigate symptoms such as persistent heartburn, nausea, vomiting, abdominal pain, or difficulty swallowing. It can also help find the cause of bleeding, check for inflammation, and look for ulcers or other abnormalities in the lining of the digestive tract.

: How to Prepare

: Preparation depends on which part of the digestive tract is being examined. For upper endoscopy, you are usually asked not to eat or drink for several hours beforehand. Your care team will give you specific fasting instructions and tell you whether any medications need to be adjusted.

: What to Expect

: You may receive a sedative to help you relax, and the procedure typically takes a relatively short time. The doctor can take small tissue samples (biopsies) during the exam if needed. Most people recover quickly, though you may need someone to drive you home after sedation.