Correlation between manometric and pH tests for gastro-oesophageal reflux.

摘要: A series of tests, including gastro-oesophageal sphincter pressure measurement, short-term pH and 15-hour overnight oesophageal recording were applied to 42 normal subjects 214 patients with typical reflux symptoms. The results compared by multivariate discriminant analysis. Sphincter measurements misclassified 32%, stressed provocative manoeuvres 14-5%, the best single discriminator from study was time below 5, which 13%. However, a combination number episodes in 15 hours their mean duration reduced misclassification 8-8%. Using this function, boundary between can be drawn, degree abnormality expressed visually as well numerically.