Computer-aided analysis of gastrointestinal pressure recordings. Comparison with manual scoring.
The aim of the present study was to compare computer-based and visual/manual scoring of pressure recordings from the gastric antrum and duodenum. The computer system was based on three separate principles of recognition: moving average, tracking base line, and threshold filters. Computer scoring resulted in the detection of more contractions than visual/manual scoring, owing to inclusion of artefacts of duration and amplitude above the selected thresholds. Owing to its unreliability, visual/manual scoring led to inclusion of some contractions of below-borderline amplitude or duration. The median difference in the frequency of contractions was, however, 0 min-1. There was close agreement on amplitudes of contractions. As the differences between visual/manual analysis and computer-aided scoring by the present system are of an unimportant magnitude and as computer-based scoring is consistent, we conclude that computer-aided analysis is preferable to visual/manual analysis.
Melsen
N C
NC
Dept. of Anaesthesiology, University Hospital of Aarhus, Denmark.
Andersen
M B
MB
Kraglund
K
K
Juhl
B
B
D004386:Duodenum / Q000502:physiology; D004750:Enteral Nutrition; D005769:Gastrointestinal Motility; D006801:Humans; D008365:Manometry; D009119:Muscle Contraction; D011312:Pressure; D012815:Signal Processing, Computer-Assisted; D013270:Stomach / Q000502:physiology