Title :
Development of a three-channel, 24-h ambulatory esophageal pressure monitor
Author :
Pfister, Catherine J. ; Harrison, Mark A. ; Hamilton, John W. ; Tompkins, Willis J. ; Webster, John G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
The monitor is a battery-operated, microprocessor-based device that measures pressures from three transducers positioned in the esophagus, stores the data in its memory, and transfers the data to an IBM PC computer system at the end of the recording period. Programs on the PC then analyze the data and identify contractile events, categorizing them according to specific parameters. Other programs display the pressure waveforms on the PC and allow visual inspection of the entire recordings or, alternatively, of particular events of interest. The system detects contractile abnormalities in patients with intermittent, noncardiac chest pains. The system was tested on ten normal subjects. A relatively high incidence of what are usually considered ´abnormal´ contractions was found.<>
Keywords :
biomechanics; biomedical equipment; patient monitoring; pressure measurement; IBM PC computer system; contractile abnormalities; contractile events densification; intermittent noncardiac chest pains; medical instrumentation; pressure waveforms display; Biomedical monitoring; Capacitive sensors; Computerized monitoring; Data analysis; Digital recording; Esophagus; Pain; Patient monitoring; System testing; Transducers; Esophagus; Humans; Monitoring, Physiologic;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
