Tests & Investigations

Oesophageal Manometry & 24 Hour pH Studies

The manometry test may be suggested for people experiencing:

Difficulty swallowing (dysphagia)

Pain when swallowing (odynophagia)

Heartburn or Reflux

Chest Pain

Booking Your Test(s):

To book your test, please ensure you have a valid referral from your GP or specialist (see below form). Once your referral has been received, our reception team will contact you to complete your booking. For any questions, please call our team on (03) 9416 4418

Associated Fees:

Oesophageal Manometry

Oesophageal manometry, also known as oesophageal physiology studies, is a procedure that measures how well the muscles of the food pipe (gullet or oesophagus) are working.

A thin, flexible tube that contains sensors is passed through the nose, along the back of the throat and down the oesophagus into the stomach.

Pressure sensors along the length of the tube record muscle function as the test candidate swallows water.

  • The oesophagus moves food from the throat down to the stomach with a wave-like motion called peristalsis.

    Oesophageal manometry will measure how well this movement is performed. It will also allow the doctor to examine the muscular valve (sphincter) connecting the oesophagus to the stomach.

    The valve should relax to allow food and liquid to enter the stomach and should close to prevent food and liquid moving up from the stomach and back into the oesophagus.

    Problem with peristalsis or sphincter function may cause swallowing difficulty, heartburn or chest pain.

24-Hour pH Study

A 24-hour pH study is often done in conjunction with the oesophageal manometry to monitor the levels and changes in acid content in the oesophagus over a 24-hour period, while the patient conducts his or her normal daily activities.

It is used to diagnose gastro-oesophageal reflux disease (GERD – digestive acid passing from the stomach, up into the oesophagus), to determine the effectiveness of medications that are given to prevent acid reflux and to determine if episodes of acidic reflux are causing chest pain.

  • A smaller tube than that used for oesophageal manometry is passed through the nose into the oesophagus in the same manner as for manometry.

    This tube is connected to a small recording device that is worn on a belt for the following 24 hours.

    Food diaries are completed by the patient over the 24-hour period following tube placement to record all food and fluid taken. Diaries should also include information about sleep patterns and symptoms.

    Symptoms are recorded via the recording device to allow them to be related to episodes of reflux. The tube is removed the next day.

Procedure Risks:

The Oesophageal manometry and pH study are generally safe procedures and complications are rare. However as with any medical procedure, they do carry a risk of complication.

During the procedures some people may experience;

  • Discomfort or gagging when the tube passes into the throat

  • A slight nosebleed

  • After the procedures some people may have some mild side effects, including:

  • Sore throat

  • Stuffy nose

  • Minor nosebleed

Extremely rare, but severe complications may include:

  • Irregular heartbeat

  • Stomach contents flowing back into the oesophagus, which can then be taken into the lungs (aspiration)

  • A hole in the oesophagus (perforation)

PH Study only: $495

Manometry only: $495

Both pH Study & Manometry Testing: $990

Fees up to date as of 27/11/24. Please contact our clinic rooms to confirm.