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  • Gastrointestinal manometers designed to measure the pressure in the esophagus (i.e., intraesophageal). These manometers typically be an external pressure measuring instrument with a display or gauge and appropriate esophageal catheters. Esophageal manometers may be instruments that measure and display pressure externally using esophageal water-perfusion catheters with openings at different levels or electronic instruments that process and display the signal from a set of built-in pressure transducers located in a catheter; the instruments frequently include a pH sensor. They are intended to assess pressure at various points in the esophagus, typically in the upper esophageal sphincter, at several midpoints, and in the lower esophageal sphincter. The instruments are intended to assess patients with dysphagia, acid reflux, and/or other upper gastrointestinal tract diseases.
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