Esophageal pH Monitoring

Patient Guide to Esophageal pH Monitoring

General Overview

A 24 hour pH probe study allows the measurement of acid within the esophagus (swallowing tube) to determine if abnormal gastroesophageal reflux is present. This procedure is performed by placing a slender, flexible plastic catheter (tube) into the nose and then advancing the tube into the lower portion of the esophagus. A pH probe study can demonstrate whether an abnormal amount of acid splashes up into the esophagus, how often this occurs, and whether any episodes of acid reflux are associated with a patient's symptoms. For this reason, it is important for patients to keep a symptom diary during the procedure so their doctor may determine whether acid reflux episodes (times when acid splashes up into the esophagus) correlates with a patient's symptoms.

Frequently Asked Questions

Can I eat before the procedure?

No; only meds and sips of water after midnight the night before the procedure.

May I eat normally during the procedure?

Yes; it is best to eat and drink normally during the procedure so that the doctors may obtain an accurate and true life determination of a patient's reflux.

Should I limit my physical activity while the pH probe is in place?

While vigorous exercise could displace the probe, walking, household activities, and a normal work schedule are encouraged.