Accuracy Analysis of Pulse Oximetry Based on Dynamic Spectroscopy
LI Gang1, LI Shang-ying1, LIN Ling1, WANG Yan1, LI Xiao-xia1，2, LU Zhi-yang1
1. College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China 2. School of Electrical and Automatic Engineering, Hebei University of Technology, Tianjin 300130, China
Abstract：The pulse oximeter used to measure patient’s oxygen saturation non-invasively and continuously, has numerous applications in clinic care. The pulse oximetry measurement combines two basic methods, spectrophotometry and photoplethysmography (PPG). The red light and the infrared light are exposed to the ear lobe, finger or other tissue with fluctuation of artery blood, and then detected. The amplitude ratio of the photoplethysmography waveform of red light and infrared light varies with the oxygen saturation of blood. The measuring principle of the pulse oximeter is based on traditional test method，its accuracy is not gratifying due to various factors influencing the measurement result, such as the principle, measuring condition, and individual discrepancy. In the present paper a new pulse oximetry based on dynamic spectroscopy is introduced, It can promote the accuracy of the pulse oximeter evidently. The dynamic spectroscopy method is able to eliminate the interference of individual discrepancy and measuring condition in principle. This new method can eliminate the measurement error of pulse oximetry theoretically.
李刚1,李尚颖1,林凌1,王焱1,李晓霞1，2，卢志杨1 . 基于动态光谱的脉搏血氧测量精度分析[J]. 光谱学与光谱分析, 2006, 26(10): 1821-1824.
LI Gang1, LI Shang-ying1, LIN Ling1, WANG Yan1, LI Xiao-xia1，2, LU Zhi-yang1 . Accuracy Analysis of Pulse Oximetry Based on Dynamic Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(10): 1821-1824.
[1] Joseph F Kelleher. Journal of Clinical Monitoring, 1989, 5(1): 37. [2] ZHOU He-qin, FENG Huan-qing, DU Ke-qiang(周荷琴，冯焕清，杜克强). Chinese Journal of Medical Instrumentation(中国医疗器械杂志), 1997, 21(2): 67. [3] Strieoei H W, Kretz F J. Anaesthesia，1989, 38(12): 649. [4] Baker S J，Tremper K K. Anesthesiology，1997, 86(1): 101. [5] Deng Yuan, Dong S H, Li G Y, et al. 2<sup>nd</sup>. FECMBE, 1993. 357. [6] XU Guang-tong, YUAN Hong-fu, LU Wan-zhen(徐广通，袁洪福，陆婉珍). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2000，20(2): 134. [7] YAN Yan-lu, ZHAO Long-lian, LI Jun-hui, et al(严衍禄, 赵龙莲, 李军会, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2000, 20(6): 777. [8] LI Gang, LIU Yu-liang, LIN Ling, et al. 3<sup>rd</sup> International Symposium on Instrumentation Science and Technology, 2004, Vol. 3, 875. [9] LI Gang，LI Xiao-xia, LIN Ling, et al(李 刚，李晓霞，林 凌，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(2): 263. [10] WANG Xiu-zhang, CHEN Sheng-quan(王秀章，陈声权). Chinese Journal of Medical Physics(中国医学物理学杂志), 1995, 12(1): 58. [11] Delay D T, Cope M, van der Zee P. Physics in Medicine and Biology, 1991, 33: 1433.
