2.1.1
Gastro-oesophageal reflux disease (GORD) is a common disorder in which a backwash of gastric juices into the oesophagus leads to inflammation and pain. Symptoms include heartburn, belching and regurgitation of gastric contents. Complications of GORD include oesophageal stricture and Barrett's oesophagus (which is associated with carcinoma of the oesophagus). The frequency of exposure to gastric acid over a given period provides a measure of the severity of the disease and can be measured by oesophageal pH monitoring. Common indications for pH monitoring include symptoms that are refractory to therapy with proton pump inhibitors, evaluation before surgery and recurrence of symptoms after anti-reflux surgery.