Computer analysis of human esophageal peristalsis and lower esophageal sphincter pressure. II. An interactive system for on-line data collection and analysis.
A computer program has been written to directly read and analyze esophageal manometric tracings on-line using low-cost off-the-shelf microcomputer hardware. The system consists of an Apple IIe microcomputer and an Interactive Microwave Inc. ADALAB Data Acquisition System with an AI13 fast A/D Multiplexer. The primary program is in BASIC with ASSEMBLY language subroutines for data collection. Data are collected through the voltage output of a Hewlett-Packard recorder at 30 points per second on four channels for lower esophageal sphincter pressures (LESP) and three channels for peristaltic waves. Computer-determined values for LESP and wave parameters showed excellent correlation with mean values as read by five individuals experienced in esophageal manometry.
D000328:Adult; D003199:Computer Systems; D003625:Data Collection / Q000295:instrumentation; D004943:Esophagogastric Junction / Q000502:physiology*; D004947:Esophagus / Q000502:physiology*; D006801:Humans; D008365:Manometry; D008838:Microcomputers; D008875:Middle Aged; D009862:Online Systems; D010528:Peristalsis; D011312:Pressure; D012984:Software