Esophageal pH Assessment - Impedance Monitoring
The esophageal impedance monitoring procedure is a complementary test and is used in combination with esophageal pH acid monitoring to evaluate the presence in the esophagus of non-acid reflux content from the stomach. Although some reflux is normal, excess reflux may damage the lining of the esophagus and cause symptoms such as chest pain, heartburn, difficulty or painful swallowing, cough, hoarseness or asthma.
A small (2 millimeter) catheter is inserted through your nose, down the back of your throat and into your esophagus. The tube is taped in place on your nose and has a long cord that is attached to a portable data recorder. You wear the recorder in a pouch that has a strap that goes around your waist or neck.
Unless instructed otherwise by your physician: