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Endoscopy Procedure Guide from a Gastroenterologist

Doctor With Patient

Board-Certified Gastroenterologists

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Receive expert digestive care from experienced gastroenterologists, Dr. Tenenbaum and Dr. Aviles, who provide accurate diagnoses, personalized treatment plans, and high-quality colonoscopy care.

Doctor endoscopist at work in hospital room_edited.jpg

What is an endoscopy?

An upper endoscopy, also called en esophago-gastroduodenoscopy or an EGD is a procedure that allows us to view the mucosal lining of the upper intestinal tract which includes esophagus, stomach and duodenum.

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​When is an endoscopy recommended?

Dr. Aviles and Dr. Tenembaum use upper endoscopy to evaluate for symptoms of abdominal pain, acid reflux, heartburn, chest pain, difficulty swallowing, nausea, vomiting and bleeding as well as causes for anemia. An EGD can detect inflammation, infections, tumors, ulcers and anatomical abnormalities such as hernias and outlet obstructions. 

What digestive conditions can an upper endoscopy detect?

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​When to see a gastroenterologist

You should schedule an evaluation if you experience:

  • Persistent heartburn

  • Difficulty swallowing

  • Unexplained nausea or vomiting

  • Upper abdominal pain

  • Blood in vomit

  • Black stools

  • Unexplained anemia

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Many of these symptoms can be caused by common digestive conditions, but persistent symptoms should be evaluated . If you are experiencing persistent heartburn, difficulty swallowing, nausea, vomiting, or abdominal pain, schedule a consultation with Dr. Aviles or Dr. Tenembaum for further medical advice.

1 in 5 adults

experience chronic acid reflux symptoms that may require evaluation with an upper endoscopy

3 cups

Blueberries

3 cups

Flour

1 cup

Sugar

Stomach

Small Intestine

COLON

What happens during an upper endoscopy (EGD)?

The procedure is performed using an endoscopy which is a long thin flexible tube with a light and a tiny video camera attached to the end which transmits the image to a monitor. 

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Before the procedure

Before the procedure begins you will be given a fast active sedative through an IV and a small mouth-guard to prevent damage to your teeth and scope.

 

During the procedure

Once you are asleep the procedure will begin and we will gently advance the scope into your mouth, slowly and gently through your esophagus and into your stomach and duodenum. The time from start to finish is around 10-20 minutes depending on the findings. During the exam we will likely take tissue samples called biopsies which will help us distinguish benign, pre-cancerous and cancerous tissue as well as rule out Helicobacter Pylori, the bacterium that commonly leads to ulcers and stomach pain. During the entire procedure, you will feel no pain or discomfort.

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After the procedure

After the endoscopy, you will be taken to out recovery area and will be monitored as the sedative begins to wear off. During this period, you may feel slightly groggy and mild abdominal bloating which will go away on its own after a very short period of time. When you receive the results will depend on your situation, it is likely you will have to wait a few days to for complete results with tissue findings as this process takes our pathologist and laboratory 5-7 days.​​

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Most upper endoscopies take only 10–20 minutes, and patients return home the same day.

Doctor Consultation Desk

Ready to Schedule Your Appointment?

Choosing the right gastroenterologist matters. At Queens GI, we're committed to providing safe, high-quality care with a patient-first approach. From your first phone call through recovery, our team is here to answer your questions, explain every step, and make your experience as comfortable as possible.

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Schedule your appointment today and take an important step toward protecting your long-term digestive health.

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