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Bravo (Esophageal pH Monitoring)

An esophageal pH test measures and records the pH levels in your esophagus to determine if you have gastroesophageal reflux disease (GERD) – the cause of heartburn. This test allows your doctor to evaluate your heartburn symptoms to determine the frequency and duration of acid coming up into your esophagus. The test can also be done to determine the effectiveness of medications or surgical treatment for GERD.



A small capsule, about the size of a gel cap, is temporarily attached to the wall of the esophagus during an upper endoscopy. The capsule measures pH levels in the esophagus and transmits readings by radio telecommunications to a receiver (about the size of a pager) worn on your belt or waistband. The receiver has several buttons on it that you will press to record symptoms of GERD such as heartburn (the nurse will tell you what symptoms to record). You will be asked to maintain a diary to record certain events such as when you start and stop eating and drinking, when you lie down, and when you get back up.

Please note: Occasionally, your doctor may want you to continue taking a certain medication during the monitoring period to determine if it is effective.


Here is what you need to do during the 48-hour monitoring period:

You will return the receiver and diary when the monitoring period is over. The information on the receiver and diary will be downloaded to a computer and the results will be analyzed. The study data will be reviewed with you if you desire.

After Completion of the Study

Potential Complications