MEDLINEplus Health Information: Return to home page   A service of the National Library of Medicine: Go to NLM home page
Search     Advanced Search    Site Map    About MEDLINEplus    Home
Health Topics: conditions, diseases and wellness Drug Information: generic and brand name drugs Dictionaries: spellings and definitions of medical terms Directories: doctors, dentists and hospitals Other Resources: organizations, libraries, publications, MEDLINE

Medical Encyclopedia

Disease     Injury     Nutrition     Poison     Special     Surgery     Symptoms     Tests


Esophageal endoscopy
 
Overview   Risks   Results   

Esophageal pH monitoring

Alternative names:

esophageal acidity test; pH monitoring - esophageal

How the test is performed:

You are asked to swallow a thin tube that is either placed through your nose or mouth. It is similar in size to a piece of spaghetti. This tube is passed into your stomach, then withdrawn back into your esophagus.

The tube measures the level of acidity in your esophagus. It is attached to a monitor that you wear on a strap. You will be asked to keep a diary of your symptoms and activity over the next 24-hours. The next day you will be asked to return, and the tube will be removed. The information from the monitor will be compared to the diary you provide.

In infants and children:
Infants and children will most likely remain in the hospital for the esophageal pH monitoring. Since the tube is placed for a short duration, it is usually placed in the mouth since access is easier than through the nose.

How to prepare for the test:

Your health care provider will ask you to fast and avoid smoking from midnight on, the night before the test.

Some drugs and medications may alter the test results, and therefore 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

How the test will feel:

You may experience a brief gagging sensation as the catheter is passed through your throat.

Why the test is performed:

Esophageal pH monitoring is used to assess how much stomach acid is entering the esophagus and how well it is cleared. In infants, this test is usually used to evaluate the absence or presence of GERD and associated excessive crying or other problems.


Adam

The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Copyright 2000 adam.com, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Health Topics | Drug Information | Dictionaries | Directories | Other Resources