Physiological gastroesophageal reflux and esophageal motor activity studied with a new system for 24-hour recording and automated analysis

Abstract
Gastroesophageal reflux and esophageal motility were studied for 24 hr in 32 ambulatory healthy volunteers (20–73 years old), using a newly developed system, consisting of a microprocessorbased data recorder and algorithms for fully automated data analysis. Physiological reflux was more extensive than expected on the basis of widely used normal values. The percentage of time with pH.