Transnasal Esophagoscopy
It is now possible to use a very small flexible endoscope to evaluate the esophagus and stomach without the need for intravenous sedation or general anesthesia. The procedure, called Transnasal Esophagoscopy (TNE) is performed in the office using local anesthesia sprayed into the nose. The scope, which is about the size of a small soda straw, is passed through one nostril and down the back of the throat, through the esophagus and into the stomach. This allows for direct inspection of the lining of the structures and biopsies can be obtained to check for Barrett's esophagitis. CLICK HERE for detailed patient instructions for TNE.
In some patients, even the tiny scope may not be well tolerated, so for them a conventional endoscopy performed at the hospital under anesthesia may still be the best choice.
Conventional Endoscopy
Before initiating any treatment of GERD, the inside of the esophagus and stomach should be examined directly with a procedure called an endoscopy, or EGD. The anatomy and relative health of the upper GI tract can be evaluated from the inside, and biopsies performed. Chronic GERD can sometimes cause ulcerations and even bleeding. It can also cause scarring, which may lead to a narrowing or stricture of the esophagus. In about 10% of patients with GERD, the lining of the lower esophagus undergoes a change that makes it look more like the lining of the stomach. This condition is called Barrett's Esophagus, and is associated with an increased risk of esophageal cancer.
pH Monitoring
When Acid Reflux is suspected but not confirmed, it may be necessary to actually measure the amount of acid in the esophagus over a 24-48 hour period to confirm the diagnosis of GERD. Traditionally, this was accomplished by placing a tube down through the nose into the esophagus, which was connected to a monitoring device. Today, this rather uncomfortable procedure has been replaced by a less cumbersome process where a tiny capsule, called a Bravo Probe, is attached during an endoscopy directly to the lining of the esophagus.
The probe measures the amount of acid in the esophagus and transmits the information to a small electronic device about the size of a cell phone, which is worn on the patient's belt. After 2 days the data from the monitor is downloaded to a computer for analysis. For the test to be accurate the patient must remain off all acid supressing medication, like PPIs and H2-Blocker for 7 days prior to beginning the study. It is okay to use antacids like Rolaids, Tums, Maalox or Mylata to control acid symptoms during the pre-testing time, but even these medication need to be avoided during the 48 hours of the actual test.
The Bravo Probe is completely disposible and releases from the lining of the esophagus after about 7 to 10 days. It then passes through the intestinal tract and out of the body along with a bowel movement. While the probe is in place, some patients experience slight discomfort with swallowing, but this is temporary and generally does not require an alteration in diet.
Esophageal Motilty

Additional testing is often required, not only to ensure the diagnosis is in fact gastroesophageal reflux, but also to assess the functional capability of the esophagus. One such test is called
Esophageal Motility or
Esophageal Manometry. To accurately measure the strength of esophageal contractions, a small catheter is placed through the nose down into the stomach. There are multiple pressure monitors along the length of the catheter which provide a clear picture of exactly what is happening during the process of swallowing. The test typically take about 30 minutes to perform, and the information obtained can be very helpful in determining the safest and most effective treatment. We use the latest "state-of-the-art" High Definition system, which provides the most accurate information and is well totlerated by most patients.
X-ray Studies
Barium Swallow and Upper GI X-rays are commonly used to evaluate the esophagus and stomach. While they provide helpful information about the anatomy, these imaging studies offer little useful information about the function of these organs. Likewise, a CT scan of the chest and abdomen may be very helpful in identifying and measuring a hiatal hernia, it is not very helpful in determining the presence or extent of reflux disease.