We can measure whether they are of normal strength, speed and direction. Tests are done at the upper esophageal sphincter. After performing these maneuvers the tube is gently removed. The test usually is completed within ten or fifteen minutes. The traces recorded on the computer screen are printed out and analyzed.
Patients can return to their usual activities.
Sometimes another test is done in conjunction with manometry. Gastroduodenal Manometry Gastroduodenal manometry is a test of the pressure changes which occur within the stomach and upper intestine during digestion. The test is similar to esophageal manometry, but takes longer and requires some sedation because of the manipulation. The position of the manometry testing tube is checked with x-ray, and the endoscope is removed. The tube is left coming out through the nose for one or two hours.