title: Hiatal incompetence and gastro-oesophageal reflux.
abstract: Gastro-oesophageal reflux and hiatal incompetence were analysed in 191 patients using a new radiographic contrast medium, polyiodostyrene, with the same density (1.0 g/cm3) as ordinary gastric contents, and correlated with supplementary oesophagoscopy and intraluminal pressure measurements. A normal hiatus seems to be an important protection against gastro-oesophageal reflux. An incompetent hiatus involves a real risk for oesophagitis. A low-density, low-viscosity contrast medium improves the roentgenologic diagnosis of gastro-oesophageal reflux.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003287:Contrast Media; D003964:Diaphragm / Q000503:physiopathology*; D004942:Esophagitis, Peptic / Q000209:etiology; D004943:Esophagogastric Junction / Q000503:physiopathology; D004945:Esophagoscopy; D005260:Female; D005764:Gastroesophageal Reflux / Q000000981:diagnostic imaging*; D006548:Hernia, Diaphragmatic / Q000000981:diagnostic imaging*; D006551:Hernia, Hiatal / Q000145:classification / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure; D011859:Radiography; D013343:Styrenes
chemical_list: D003287:Contrast Media; D013343:Styrenes