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Patient care — diagnostic tools, tests, procedures

Esophageal manometry: An esophageal manometry test measures the motility and function of the esophagus and esophageal sphincter. A tube is inserted into the mouth and passed into the esophagus. The pressure of the sphincter muscle is recorded and also the contraction waves of swallowing are recorded. The manometry test is a tool used to help evaluate swallowing disorders.

A thin tube is passed through your mouth or nose and into your stomach, then the tube is pulled slowly back into the esophagus. Pressure measurements may be taken at intervals along the tube. The outer end of the tube is attached to an instrument called a transducer that will record the pressure.

The transducer records the high pressure zone of the lower esophageal sphincter (LES), the sphincter muscle that acts as a valve to prevent reflux of gastric acid into the esophagus.

When the tube is in the esophagus, you will be asked to swallow. The swallowing wave will be recorded.

While the tube is in place, other studies of your esophagus may be done. The tube is removed after the tests are completed.

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