Esophageal pH Study
What is an Esophageal pH Study?
Your doctor has recommended you have an esophageal pH study. This test has been recommended to determine if you have GERD (gastroesophageal reflux disease) and/or to see how severe it is. Reflux is a condition in which stomach acid refluxes (moves back) into the esophagus. This test measures how often the stomach contents reflux into the esophagus, how long the acid stays there, and how much reflux occurs at night. This test is done over a 24 hour period.
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What can expect before this procedure?
7 DAYS BEFORE THE EXAM: Unless your referring physician requests otherwise, you should stop taking medications to treat heartburn or ulcers, such as:
- Omeprazole (Prilosec, Zegerid)
- Lansoprazole (Prevacid)
- Pantoprazole (Protonix)
- Rabeprazole (Aciphex)
- Esomeprazole (Nexium)
5 DAYS BEFORE THE EXAM: Stop taking the following H-2 blockers:
- Cimetidine (Tagamet)
- Ranitidine (Zantac)
- Famotidine (Pepcid)
- Nizatidine (Axid)
5 DAYS BEFORE THE EXAM: Unless your referring physician requests otherwise, stop taking the following medication:
- Metoclopramide (Reglan)
You may take over the counter antacids (like Tums or Rolaids) if needed for your GERD symptoms while you are off your prescription medications. Please do not take antacids while you are undergoing the 24 hour test.
What can I expect during this procedure?
During the test, a thin tube with an acid sensing device on the tip is passed through the nose, down the esophagus, and positioned in the lower esophagus. The tube is secured to the side of your face with clear tape. The tube is connected to a portable recorder that is worn over your shoulder or on your belt. The recorder has a button you will press to record certain events, such as heartburn. A nurse will review monitoring instructions with you, such as activities to avoid, eating instructions, medications to avoid, and how to record symptoms and events.
What can I expect after this procedure?
Once the procedure is completed, you will be allowed to leave the clinic and return home. You will return 24 hours after the test for your return appointment. The pH monitor will be removed at this time. The information collected in the recorder will then be downloaded to a computer. If you have any questions or problems either before or after the procedure, please feel free to contact a nurse clinician.
Related websites and resources:
| University of Missouri Health Care | This information is not intended to replace the advice of a doctor. |
