09/08/2026
High resolution oesophageal manometry is a test that measures pressure in the oesophagus (food pipe) and sphincters (ring like muscles at either end of the oesophagus). The test is performed using a small probe (tube) with pressure sensors at 1 cm intervals, allowing pressure measurement along the whole oesophagus and both sphincters at the same time (please see the diagram below). This allows assessment of how well the muscles in the oesophagus and sphincters are working, and whether contractions within the oesophagus are co-ordinated.
24-hour pH monitoring measures the amount of acid coming up (refluxing) into the oesophagus from the stomach over a 24-hour period. This allows us to establish whether your symptoms are due to acid reflux.
