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Capillary refill time (CRT) is used to assess circulatory status in the pediatric emergency department patient. It is recommended by the World Health Organization and is part of the Pediatric Early Warning Score. Current manual assessment methods show high inter-observer variability. Assessment of CRT using polarized reflectance imaging could eliminate this problem and improve the reliability. A Canon EOS M100 camera was used to obtain videos (50 fps) of CRT tests from 15 pediatric emergency patients aged ≤ 6, with a variety of chief complaints. The system was easy to use, well tolerated and produced highly consistent assessments of CRT.
Frida Meyer,Jonatan Stahre,Rani Toll,Joakim Henricson,Hanna Jonasson, andDaniel Wilhelms
"Polarized reflectance imaging: an objective way to assess capillary refill time in children (Conference Presentation)", Proc. SPIE PC12387, Optical Diagnostics and Sensing XXIII: Toward Point-of-Care Diagnostics, PC1238705 (16 March 2023); https://doi.org/10.1117/12.2647122
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Frida Meyer, Jonatan Stahre, Rani Toll, Joakim Henricson, Hanna Jonasson, Daniel Wilhelms, "Polarized reflectance imaging: an objective way to assess capillary refill time in children (Conference Presentation)," Proc. SPIE PC12387, Optical Diagnostics and Sensing XXIII: Toward Point-of-Care Diagnostics, PC1238705 (16 March 2023); https://doi.org/10.1117/12.2647122