验证一种新的非侵入性技术,用绿光估计血液中氧和值:观察性研究
Sanjay Gokhale1, Vinoop Daggubati2, Georgios Alexandrakis1
1Department of Biomedical Engineering, The University of Texas at Arlington, Arlington, TX, United States.
JMIR biomedical engineering
|June 14, 2024
概括
实验中的Shani (SH1) 装置准确地测量了组织层面的氧和度,克服了传统脉冲氧计在不同肤色和温度变化的局限性. 这项新技术在消除生物标志物评估中的种族差异方面表现有前途.
科学领域:
- 生物医学工程 生物医学工程
- 生理测量生理测量
- 频谱学是一种光谱学.
背景情况:
- 传统的脉冲氧计使用红-红外波长,导致肤色较暗或 extremities 较冷的人的读数不准确.
- 发烧患者常见的体温升高,可以降低血红蛋白的氧 afinity,导致测量氧和度的虚假下降.
研究的目的:
- 评估Shani设备 (SH1),一个研究设备,其能够准确检测氧和和氧血球度的变化.
- 确定SH1装置是否能够克服传统脉冲氧计的局限性,特别是关于皮肤色素和温度波动的局限性.
主要方法:
- 一项观察性研究涉及39名参与者 (年龄在20-40岁),使用SH1装置和Masimo脉冲氧计进行比较.
- 该SH1装置使用两个LED发射波长,对应于氧血红蛋白和脱氧血红蛋白吸收峰值,计算总血红蛋白.
- 16名参与者的小组接受了热衣研究,以诱导体温的受控升高 (0.5-0.8°C),监测组织水平的氧血球蛋白变化,并通过·卢沙恩尺度评估黑色素水平.
主要成果:
- 与Masimo脉冲氧计相比,SH1装置在检测体温变化导致的轻微氧血球蛋白水平变化方面表现出更高的灵敏度.
- 通过SH1检测到的氧血球度的最大下降为6.5%,而Masimo设备的下降为2.54%.
- 这项研究包括了具有广泛肤色的参与者 (·卢珊尺度12-36),表明在公平,棕色和深色皮肤类型中均分布.
结论:
- 该SH1设备准确地使用绿色波长的反射光谱测量组织水平的氧和度,在各种皮肤颜色中可靠地执行.
- 这项技术有可能消除关键生物标志物测量中的种族差异.
- 该SH1设备的设计,利用基于手腕的测量,允许直接微型化成可穿戴设备.
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