24 Hour PH Probe
The purpose of this test is to monitor, over a 24-hour period, the amount of acid that refluxes into the esophagus.
The test is performed for patients with heartburn, hoarseness, chronic cough, atypical chest pain, and adult onset asthma.
What to Expect
During a 24-hour pH procedure, you will wear a monitor. The doctor will place a thin, flexible tube or catheter through your nose and into the esophagus. The tip of the catheter is sensitive to acids and it will measure the flow of liquid from the stomach to the esophagus. It will be left in for 24 hours. You can go about your normal activities, but you should not try to shower or bathe while wearing the catheter and monitor. The monitor will have several buttons on it. Nurses will instruct you on which events prompt the pushing of the different buttons.
Atypical Chest Pain
Adult Onset Asthma