12 February 2018 Simultaneous, noninvasive, in vivo, continuous monitoring of hematocrit, vascular volume, hemoglobin oxygen saturation, pulse rate and breathing rate in humans and other animal models using a single light source
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Abstract
We previously reported a new algorithm “PV[O]H” for continuous, noninvasive, in vivo monitoring of hematocrit changes in blood and have since shown its utility for monitoring in humans during 1) hemodialysis, 2) orthostatic perturbations and 3) during blood loss and fluid replacement in a rat model. We now show that the algorithm is sensitive to changes in hemoglobin oxygen saturation. We document the phenomenology of the effect and explain the effect using new results obtained from humans and rat models. The oxygen sensitivity derives from the differential absorption of autofluorescence originating in the static tissues by oxy and deoxy hemoglobin. Using this approach we show how to perform simultaneous, noninvasive, in vivo, continuous monitoring of hematocrit, vascular volume, hemoglobin oxygen saturation, pulse rate and breathing rate in mammals using a single light source. We suspect that monitoring of changes in this suite of vital signs can be provided with improved time response, sensitivity and precision compared to existing methodologies. Initial results also offer a more detailed glimpse into the systemic oxygen transport in the circulatory system of humans.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul Dent, Paul Dent, Sai Han Tun, Sai Han Tun, Seth Fillioe, Seth Fillioe, Bin Deng, Bin Deng, Josh Satalin, Josh Satalin, Gary Nieman, Gary Nieman, Kailyn Wilcox, Kailyn Wilcox, Quinn Searles, Quinn Searles, Sri Narsipur, Sri Narsipur, Charles M. Peterson, Charles M. Peterson, Jerry Goodisman, Jerry Goodisman, James Mostrom, James Mostrom, Richard Steinmann, Richard Steinmann, J. Chaiken, J. Chaiken, } "Simultaneous, noninvasive, in vivo, continuous monitoring of hematocrit, vascular volume, hemoglobin oxygen saturation, pulse rate and breathing rate in humans and other animal models using a single light source", Proc. SPIE 10484, Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XVI, 1048410 (12 February 2018); doi: 10.1117/12.2290231; https://doi.org/10.1117/12.2290231
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