digestive disorders
Acid Related and Reflux Related Tests
Wireless Monitoring
Doctors can also monitor acid in the esophagus using a wireless pH-sensing capsule. Doctors use a flexible viewing tube ( Endoscopy ) passed through the person's mouth to attach the capsule to the lower part of the esophagus. The capsule continuously monitors acid exposure for 48 to 72 hours and transmits results wirelessly to a receiver worn by the person. Thus, unlike the catheter-based test, people do not have a tube in their nose for the duration of the test. Similar to the catheter-based test, people record their symptoms, meals, and sleep for the duration of the test so that doctors can tell whether symptoms occurred when acid was present. The capsule does not have to be removed. It usually falls off within a week and is passed in the stool. Because the capsule transmits data wirelessly while attached, it does not need to be retrieved from the stool. 