During esophageal manometry, a thin, pressure-sensitive tube is passed through your nose down the esophagus and into your stomach.
Before the procedure, you receive numbing medicine inside the nose. This helps make the insertion of the tube less uncomfortable.
After the tube is in the stomach, the tube is pulled slowly back into your esophagus. At this time, you are asked to swallow. The pressure of the muscle contractions is measured along several sections of the tube.
While the tube is in place, other studies of your esophagus may be done. The tube is removed after the tests are completed. The test takes about 1 hour.