Esophageal manometry is a test that helps to determine how well your esophagus is functioning. Your esophagus is a muscular tube that connects your throat to your stomach. Esophageal manometry measures the rhythmic muscle contractions (peristalsis) that occur in your esophagus when you swallow. During esophageal manometry, a thin, flexible tube (catheter) that contains sensors is passed through your nose, down your esophagus and into your stomach. Esophageal manometry can be helpful in diagnosing some disorders that affect your esophagus.
Esophageal pH testing is typically done in conjunction with esophageal manometry. Esophageal pH testing is a test that helps to determine the extent and degree of acid exposure within the esophagus. During esophageal pH testing, a small caliber catheter is inserted through your nose and positioned within the esophagus. Typically, the catheter is secured in place and allowed to take measurements over a 24-hour period.