Transnasal Endoscopy (TNE)

Also known as: transnasal esophagoscopy

What is transnasal endoscopy?

Transnasal endoscopy is a minimally invasive procedure to examine the upper gastrointestinal tract without having to use sedation to put the patient to sleep. It can be considered for children of all ages.

What happens during the procedure?

Just prior to the procedure, the clinical team will numb the child’s nasal cavity and throat. Once numbing is complete, a thin, flexible tube is passed through the nose and into the throat to enable the clinical team to assess the upper part of the digestive system. Areas that can be examined by this method include the esophagus, the stomach, and parts of the small intestine. The procedure is completed in about an hour.

What are risk factors?

The most common side effect of the procedure is a sore nose or throat, scant bleeding/irritation, mild chest/stomach discomfort or brief nausea. These effects occur in between 2 percent to 5 percent of cases.

Is any special preparation needed?

The patient may need to fast for two to four hours prior to the procedure. The clinical team will numb the nose and back of the throat prior to the procedure.

Reviewed by: Laura E Irastorza, MD

This page was last updated on: March 06, 2026 02:04 PM

Pediatric Gastroenterology

The Division of Pediatric Gastroenterology at Nicklaus Children’s Hospital is dedicated to the treatment of a wide variety of gastrointestinal problems in infants, children and adolescents with a multidisciplinary approach.

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