Abstract
Determining the level of regional anesthesia (RA) is vitally important to both an anesthesiologist and surgeon, also knowing the RA level can protect the patient and reduce the time of surgery. Normally to detect the level of RA, usually a simple subjective (sensitivity test) and complicated quantitative methods (thermography, neuromyography, etc.) are used, but there is not yet a standardized method for objective RA detection and evaluation. In this study, the advanced remote photoplethysmography imaging (rPPG) system for unsupervised monitoring of human palm RA is demonstrated. The rPPG system comprises compact video camera with green optical filter, surgical lamp as a light source and a computer with custom-developed software. The algorithm implemented in Matlab software recognizes the palm and two dermatomes (Medial and Ulnar innervation), calculates the perfusion map and perfusion changes in real-time to detect effect of RA. Seven patients (aged 18-80 years) undergoing hand surgery received peripheral nerve brachial plexus blocks during the measurements. Clinical experiments showed that our rPPG system is able to perform unsupervised monitoring of RA.
Original language | English |
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Title of host publication | Biophotonics - Riga 2017 |
Editors | Janis Spigulis |
Publisher | SPIE |
ISBN (Electronic) | 9781510616769 |
DOIs | |
Publication status | Published - 2017 |
Externally published | Yes |
Event | 2nd International Conference on Biophotonics-Riga 2017 - Riga, Latvia Duration: 27 Aug 2017 → 29 Aug 2017 Conference number: 2 https://www.proceedings.com/spie10592.html |
Publication series
Name | Progress in Biomedical Optics and Imaging - Proceedings of SPIE |
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Volume | 10592 |
ISSN (Print) | 1605-7422 |
Conference
Conference | 2nd International Conference on Biophotonics-Riga 2017 |
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Abbreviated title | BPR 2017 |
Country/Territory | Latvia |
City | Riga |
Period | 27/08/17 → 29/08/17 |
Internet address |
Keywords*
- Dermatomes
- Palm detection
- Perfusion
- Photoplethysmography imaging
- Regional anesthesia
- Remote photoplethysmography
- Skin microcirculation
- Unsupervised monitoring
Field of Science*
- 1.3 Physical sciences
- 2.6 Medical engineering
Publication Type*
- 3.1. Articles or chapters in proceedings/scientific books indexed in Web of Science and/or Scopus database