Design of a low-cost instrument for pulse oximetry

被引:2
|
作者
Ferrera, F. Magadan [1 ]
Ferrero, F. J. [1 ]
Blanco, C. [1 ]
Viera, J. C. [1 ]
Vega, M. G. [1 ]
Blanco, J. R. [1 ]
机构
[1] Univ Oviedo, Dept Elect Engn, Campus Viesques,Sede 3, Gijon, Spain
关键词
Pulse Oximetry; hemoglobin; oxygen saturation; DSP;
D O I
10.1109/IMTC.2006.328626
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Monitoring the arterial oxygen saturation is very important to defect hypoxemia, as it is the mayor final cause of anaesthetic deaths, and even when the episode is not fatal it can result in irreversible brain damage. This Work presents the design of a low-cost instrument for continuously monitoring the arterial oxygen saturation level in the patient's blood Two sources of light originate from the probe at two wavelengths (650nm and 940nm). The light is partly absorbed by hemoglobin, by amounts which differ depending on its saturation of oxygen. By calculating the light absorption at the two wavelengths the processor can compute the proportion of oxygenated hemoglobin.
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页码:573 / +
页数:2
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