Mendelson Y, Kent J C, Yocum B L, Birle M J
Worcester Polytechnic Institute, Biomedical Engineering Program, MA 01609.
Med Instrum. 1988 Aug;22(4):167-73.
The design and construction of a new optical reflectance sensor suitable for noninvasive monitoring of arterial hemoglobin oxygen saturation with a pulse oximeter is described. The reflectance sensor was interfaced to a Datascope ACCUSAT pulse oximeter that was specially adapted for this study to perform as a reflectance oximeter. We evaluated the reflectance sensor in a group of 10 healthy adult volunteers. SpO2 obtained from the forehead with the reflectance pulse oximeter and SpO2 obtained from a finger sensor that was connected to a standard ACCUSAT transmittance pulse oximeter were compared simultaneously to arterial blood samples analyzed by an IL 282 CO-Oximeter. The equation for the best fitted linear regression line between the reflectance SpO2 and HbO2 values obtained from the reference IL 282 CO-Oximeter in the range between 62 and 100% was: SpO2 (%) = 4.78 +/- 0.96 (IL); n = 110. The regression analysis revealed a high degree of correlation (r = 0.98) and a relatively small standard error of the estimate (SEE = 1.82%). The mean and standard deviations for the difference between the reflectance SpO2 and IL 282 measurements was 1.38 and 1.85%, respectively. This study demonstrates the ability to acquire accurate SpO2 from the forehead using a reflectance sensor and a pulse oximeter.
本文描述了一种新型光学反射传感器的设计与构建，该传感器适用于通过脉搏血氧仪对动脉血红蛋白氧饱和度进行无创监测。反射传感器与一台Datascope ACCUSAT脉搏血氧仪相连，该血氧仪为适应本研究而专门改装，用作反射式血氧仪。我们在10名健康成年志愿者中对反射传感器进行了评估。将通过反射式脉搏血氧仪从额头获取的SpO2与通过连接到标准ACCUSAT透射式脉搏血氧仪的手指传感器获取的SpO2同时与经IL 282 CO - 血氧仪分析的动脉血样本进行比较。在62%至100%范围内，参考IL 282 CO - 血氧仪获得的反射式SpO2与HbO2值之间最佳拟合线性回归线的方程为：SpO2(%) = 4.78 ± 0.96(IL)；n = 110。回归分析显示高度相关(r = 0.98)且估计标准误差相对较小(SEE = 1.82%)。反射式SpO2与IL 282测量值之间差异的均值和标准差分别为1.38%和1.85%。本研究证明了使用反射传感器和脉搏血氧仪从额头获取准确SpO2的能力。
