Diagnostic criteria for GERD include clinical symptoms, endoscopy, 24-hour esophageal pH monitoring, proton pump inhibitor test, and esophageal mucosal biopsy.
1. Clinical symptoms: Typical symptoms of GERD are acid reflux, heartburn and chest pain.
2. Endoscopy: GERD can be diagnosed through endoscopy by clearly observing the presence of esophageal inflammation or erosion above the dentate line and in the lower esophagus.
3. 24-hour esophageal pH monitoring: A pH electrode sensitive to luminal hydrogen ions is placed in the lumen of the esophagus to quantitatively and dynamically understand the acidity in the esophagus for 24 hours, and to clarify whether gastroesophageal reflux exists or not, and it is mainly used to confirm the diagnosis of comparative endoscopy-negative gastroesophageal reflux disease.
4. Proton pump inhibitor test: If the result of endoscopy is negative and the symptoms are suspected to be GERD, standard dose of proton pump inhibitor such as omeprazole can be taken under the guidance of specialized doctors. If the test result is positive, the diagnosis of GERD can be confirmed.
It is recommended to refer to the clinical diagnosis and examination and analysis by professional doctors in regular hospitals to determine whether you are suffering from GERD or not.