Authors:
Vladimir Kublanov
1
;
Konstantin Purtov
1
and
Mikhail Kontorovich
2
Affiliations:
1
Ural Federal University, Russian Federation
;
2
Regional Anti-Tuberculous Dispensary, Russian Federation
Keyword(s):
Remote Sensing, Remote Photoplethysmography, Respiration Monitoring, Intensive Care Unit, Video Processing.
Abstract:
The paper presents the video-based monitoring system to assess the physiological parameters and patient state in intensive care unit. It allows to measure thoracic and abdominal breathing movements, remote plethysmography signals, tissue perfusion, patient activity and changes in psycho-emotional state. Thus, the system provides a comprehensive assessment of patient state without contact. The system works in usual illumination conditions of intensive care unit and consists of a personal computer with specialized software and two low-cost Logitech C920 webcams with RGB sensors (8 bit per channel), 30 Hz sampling frequency and 640x480 pixel resolution. The webcams were placed at a distance of 80 cm above the patient’s body. The software provides automatic assessment of psychophysiological parameters and determination the following patterns: heart rate, heart rate variability, asystole and arrhythmias, breathing rate, spontaneous breathing recovery, breathing muscle tone and patient con
sciousness recovery, motor activity and control of ventilation parameters. The proposed system can be used as an additional diagnostic tool of anesthesia equipment for non-invasive patient monitoring in intensive care unit.
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