Patient Services

Esophageal pH Monitoring


Esophageal pH monitoring is a test that measures how much and how often stomach acid enters the esophagus (the tube from the mouth to the stomach).

When is Esophageal pH Monitoring used
Esophageal pH monitoring is used to diagnose gastroesophageal reflux (GERD) and to determine the effectiveness of medications that are given to prevent reflux.

GERD has been linked to the cause of asthma when asthma symptoms get worse after a meal, after exercise, at night, or after lying down. GERD and asthma often coincide due to the acid flow (reflux) causing injury to the lining of the throat, airways and lungs; this makes inhalation difficult and often causes persistent cough.

How is Esophageal pH Monitoring Performed
Esophageal pH monitoring is performed by passing a thin plastic catheter through the nose or mouth, down the back of the throat, and into the esophagus as you swallow. The tip of the catheter contains a sensor that detects acid. The catheter protruding from the nose is connected to a recorder that registers each reflux of acid. The majority of patients have no difficulty eating, sleeping or going about their normal activities while the catheter is in place. Infants and children will most likely remain in the hospital for the esophageal pH monitoring.

There are very few side effects from esophageal pH monitoring. There may be mild discomfort or irritation in the back of the throat while the catheter is in place.

How Do I Prepare for Testing
The technician performing the test will inform you of any special instructions that you may need to know before the procedure.

If your doctor has requested that an Esophageal pH Monitoring Test be performed on your child, you can call 216-844-TEST to set-up an appointment.