the aim of the present study was to investigate whether any differences could be demonstrated between patients with reflux symptoms and an acid-sensitive oesophagus ( group i ) ( positive acid perfusion test ) and a matched control group of patients with reflux symptoms and an acid-insensitive oesophagus ( group ii ) ( negative acid perfusion test ) with respect to other oesophageal function tests ( manometry , acid clearing and acid reflux ( 12-h continuous ph recording ) ) .
C0014876
oesophagus
C0017168
acid reflux