Manometry is a technique used to measure pressure within gases or liquids. It often involves a device called a manometer, which can be a simple tube filled with liquid or a more complex electronic instrument. This method is commonly used in various fields, including medicine, engineering, and meteorology, to assess pressure changes in different systems. In medicine, manometry is particularly important for evaluating the function of the esophagus and stomach. By measuring the pressure within these organs, healthcare professionals can diagnose conditions like gastroesophageal reflux disease (GERD) and other motility disorders. This information helps guide treatment options for patients.