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Novel idea to monitor and measure blood hemoglobin noninvasively

机译:无创监测和测量血红蛋白的新思路

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Measuring blood hematocrit noninvasively is reviewed in this paper. Although there is an inclination to measure the hematocrit by determining the bioelectrical impedance of the blood,?in vitro?experimental methods still remain practically inapplicable. The blood sample size is determined when blood samples are examined. Determining the impedance and volume of blood is the biggest challenge in measuring the hematocrit noninvasively without drawing a blood sample. Calculating the blood impedance?in vivo?requires developing an impedance measurement using a multi-frequency method and also calculating the change in pressure simultaneously during the heart’s pulsatile cycle.
机译:本文综述了非侵入性测量血液红细胞压积的方法。尽管倾向于通过确定血液的生物电阻抗来测量血细胞比容,但是“体外”实验方法实际上仍然不适用。在检查血液样本时确定血液样本的大小。在不抽取血液样本的情况下,无创测量血细胞比容的最大挑战是确定血液的阻抗和体积。要计算体内的血液阻抗,就需要使用多频率方法进行阻抗测量,还需要在心脏的脉动周期中同时计算压力变化。

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