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Esophageal pH monitoring
Definition:
Esophageal pH monitoring is a test that measures how often and for how long stomach acid enters the esophagus (the tube from the mouth to the stomach). Alternative Names:
pH monitoring - esophageal; Esophageal acidity test Text Continues Below
How the test is performed:
A thin tube is passed through your nose or mouth to your stomach, then withdrawn back into your esophagus. The tube is attached to a monitor that measures the level of acidity in your esophagus. You will wear this monitor on a strap and will be asked to keep a diary of your symptoms and activity over the next 24 hours. The next day you will return and the tube will be removed. The information from the monitor will be compared to the diary you provide. Infants and children will most likely remain in the hospital for the esophageal pH monitoring. How to prepare for the test:
Your health care provider will ask you to fast and avoid smoking after midnight before the test. Some drugs may alter the test results, and your health care provider may ask you to withhold those substances for 24 hours before the test. These substances may include: - Antacids
- Anticholinergics
- Cholinergics
- Adrenergic blockers
- Alcohol
- Corticosteroids
- H2 blockers
Do not discontinue any medication unless advised to do so by your health care provider. For infants and children:
The preparation you can provide for this test depends on your child's age and experience. For specific information regarding how you can prepare your child, see the following topics:
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