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Development and utilization of a wireless and portable photoplethysmograph to study the post-occlusive reactive hyperemic response in a finger

机译:无线和便携式光电容积描记器的开发和利用,以研究手指的闭塞后反应性充血反应

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Infrared light, when used in a narrow biological window, can be applied in such a way as to obtain blood flow measurements in vivo in tissues deeper than skin. When using light as a medium for blood flow measurement, the circulatory system's response to a stimulus such as occlusion may be a useful tool to characterize circulatory health. We developed a wireless, noninvasive device that uses photoplethysmography (PPG) in order to study pulsatile blood volume changes in the finger in both the skin and bone that occur during post-occlusive reactive hyperemia. We used this device at the top of the intermediate phalanx of the middle finger to measure a hyperemic response, which was induced mechanically with the use of a pressure cuff. Our study develops on prior work done by N??slund et al. and J. Mateus which evaluated pulsatile blood volume changes in bone with near-infrared light.
机译:当在狭窄的生物窗口中使用红外光时,可以以比皮肤更深的组织在体内获得血流测量的方式施加红外光。当使用光作为血液流量测量的介质时,循环系统对刺激(例如阻塞)的反应可能是表征循环系统健康的有用工具。我们开发了一种使用光电容积描记术(PPG)的无线无创设备,以研究闭塞后反应性充血期间手指在皮肤和骨骼中的搏动性血容量变化。我们在中指的中指骨顶部使用了该设备来测量充血反应,该反应是通过使用压力袖带机械诱导的。我们的研究是基于N ?? slund等人先前所做的工作。 J. Mateus用近红外光评估了骨骼中搏动性血容量的变化。

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