If you have symptoms of heartburn or acid reflux, your physician may want to determine the amount of acid (the pH) that is getting into your esophagus from your stomach. These tests are called ambulatory monitoring because you go home and go about your usual daily routine while you’re being monitored.
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.
The Bravo capsule is clipped to the lining of your esophagus using a special device that is passed through your nose or mouth. The Bravo capsule will detach from your esophagus normally within five to 14 days and be passed out of your body during a bowel movement. The pH information is transmitted by radio waves from the capsule to a special receiver you will be asked to wear. You wear the receiver in a pouch that has a strap that goes around your waist or neck.
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.
Unless instructed otherwise by your physician:
The 24 hour study and impedance monitoring can expect the following:
The 48 hour study can expect the following:
In addition to the items above, all studies can expect the following:
24 Hour Study & Impedance Monitoring
48 Hour Study
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