title: Uses of esophageal manometry and acid perfusion in the study of gastroesophageal reflux and hiatal hernia.
mesh_terms: D004947:Esophagus / Q000503:physiopathology; D005745:Gastric Acidity Determination; D005764:Gastroesophageal Reflux / Q000150:complications / Q000175:diagnosis*; D006548:Hernia, Diaphragmatic / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D006851:Hydrochloric Acid; D008365:Manometry; D010477:Perfusion
chemical_list: D006851:Hydrochloric Acid