Understanding Esophageal Manometry

What is an esophageal manometry procedure?

A muscular tube that connects the stomach to the throat, the esophagus contracts and pushes food into the stomach. It contains a valve that remains closed unless food or liquid is swallowed. The valve can also open during belching and vomiting. An esophageal manometry procedure is used to test the pressure and patterns of muscle contractions in the esophagus and lower esophageal sphincter to determine any abnormalities. Abnormalities involving the esophageal sphincter can result in heartburn, difficulty swallowing, and pain. An esophageal manometry is used to diagnose conditions related to these symptoms.

What is an esophageal manometry procedure like?

An esophageal manometry procedure takes an average of fifteen to thirty minutes. To prepare, patients will need to fast for six hours prior to the procedure. The patient should inform their doctor if they are taking any medications or supplements. Medications such as calcium channel blockers, sedatives, nitroglycerin products, and nitrate products can interfere with the procedure and results. A cream will be applied to the nostrils for the procedure to numb the area before a tube is inserted through the nostrils. A thin, lubricated, and flexible tube will be passed through the nose and towards the stomach as the patient swallows sips of water. The tube contains sensors located in various parts which measure the strength of the esophageal muscles and lower esophageal sphincter.  Once the tube is in position, the patient will sit upright while lying on their back in order for the connected computer to collect the results.  The patient should breathe slowly and remain quiet during the procedure for the results to be accurate.

The patient will discuss the results with their doctor at a follow-up appointment. They may resume eating and regular activities after the procedure. The patient may experience some soreness in the throat, a stuffy nose, or a minor nosebleed after the procedure. Abnormal results of the procedure can be the result of conditions such as a weak lower esophageal sphincter, scleroderma, abnormal contractions in the esophagus muscles, hypertensive LES, achalasia, esophageal spasms, or nutcracker esophagus. Follow-up tests may be required.  

Contact the specialists at Granite State Gastroenterology to learn more about esophageal manometry procedures if you think one could help diagnose your symptoms.