首页> 外文会议>Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XVI >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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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

机译:使用单个光源对人和其他动物模型中的血细胞比容,血管体积,血红蛋白氧饱和度,脉搏率和呼吸率进行同时,无创,体内连续监测

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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.
机译:我们之前曾报道过一种新的算法“ PV [O] H”,用于连续,无创,体内监测血液中的血细胞比容变化,并且此后显示出了其在1)血液透析,2)体位性摄动和3)期间对人类的监测的效用。在大鼠模型失血和补液过程中现在我们显示该算法对血红蛋白氧饱和度的变化敏感。我们记录了这种现象的现象学,并使用从人类和大鼠模型获得的新结果来解释这种效应。氧敏感性源自氧和脱氧血红蛋白在静态组织中产生的自发荧光的差异吸收。使用这种方法,我们展示了如何使用单个光源对哺乳动物中的血细胞比容,血管体积,血红蛋白氧饱和度,脉搏率和呼吸率进行同时,无创,体内,连续的监测。我们怀疑,与现有方法相比,可以提供改进的时间响应,灵敏度和精度来监视这组生命体征的变化。初步结果还更详细地介绍了人类循环系统中的全身氧气输送。

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