Gastro-oesophageal reflux monitoring

Test for gastro-oesophageal reflux disease (GORD)

A 24-hour monitoring of the pH levels in your oesophagus

About ambulatory reflux monitoring

Gastro-oesophageal reflux disease (GORD) is a common condition when acid from the stomach leaks up into your oesophagus, often due to a weakened sphincter. By monitoring the level of acidity in your oesophagus over 24 hours, we can assess what treatment, if any, you need.

Need to know

  • What happens icon plus

    You'll first have a local anaesthetic to numb your nose and throat, and probably an oesophageal manometry, when a catheter (thin tube) will be placed into your oesophagus. This will be removed and a thinner tube will take its place. You'll then go home until the next day. During the monitoring period, you should follow your normal routine as much as possible. This catheter will measure pH levels within your oesophagus and is linked to a small device that records this information. It can also determine whether any acid present has been swallowed or has come from your stomach. When you return the next day, your consultant will remove the catheter.
  • How to prepare icon plus

    Your consultant will talk you through the test, and advise how long you should avoid eating and drinking beforehand. You should let your consultant know about any medication you're taking, including anti-reflux medicine, as you may need to stop taking it for a certain period prior to the test. We recommend wearing loose-fitting clothes including a separate top and bottoms, as the tube will probably need to pass under your clothing. You should also avoid make-up or moisturiser on your face and neck.
  • Afterwards icon plus

    Once you've completed the 24-hour monitoring period, you'll return to your consultant, who will remove the catheter. Depending on the results of this and your oesophageal manometry, your consultant will advise on the next steps and any potential treatment. You may experience a nosebleed or a sore throat after the test, both of which are minor and should soon disappear.

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This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
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