Manometry is a medical test that measures the pressure and muscle coordination of the esophagus, stomach, and other parts of the gastrointestinal tract. The test is used to diagnose disorders that affect the movement of food through the esophagus into the stomach. During the test, a thin, flexible tube called a catheter is passed through the nose, down the esophagus, and into the stomach. The catheter contains pressure sensors that measure the force and coordination of esophageal muscles as they move food to the stomach.

Esophageal manometry is used to diagnose conditions such as achalasia, gastroesophageal reflux disease (GERD), and non-cardiac chest pain. The test can also help determine if the esophagus is contracting and relaxing properly, and if the lower esophageal sphincter (LES) is opening and closing properly.

Esophageal manometry can be performed using conventional manometry or high-resolution manometry (HRM). HRM uses more pressure sensors and is more accurate at assessing pressure changes than conventional manometry. The test is done as an outpatient procedure without sedation, and most people tolerate it well.

In summary, manometry is a medical test that measures the pressure and muscle coordination of the gastrointestinal tract. It is used to diagnose disorders that affect the movement of food through the esophagus into the stomach, and to determine if the esophagus and LES are functioning properly. The test is performed using a thin, flexible tube that contains pressure sensors, and can be done using conventional manometry or high-resolution manometry.