Noise-resistant area integration pulse oximetry

Xu Zhang; Jilun Ye; Xiaoyu Wu; Long Xu; Yi Wang

doi:10.1109/IEMBS.2005.1615520

Noise-resistant area integration pulse oximetry

Conf Proc IEEE Eng Med Biol Soc. 2005:2005:4701-3. doi: 10.1109/IEMBS.2005.1615520.

Authors

Xu Zhang¹, Jilun Ye, Xiaoyu Wu, Long Xu, Yi Wang

Affiliation

¹ Mindray Bio-Med. Electron. Co. Ltd., Shenzhen.

PMID: 17281290
DOI: 10.1109/IEMBS.2005.1615520

Abstract

An area integration method of pulse oximetry algorithm is described here suited to oxygen saturation estimation for both low perfusion and movement pulse wave. We remove the base line drift of pulse wave, and integrate the pulse wave of red and infrared separately to remove the noise. It is proven that the ratio of the area is equal to the ratio ac part of pulse wave. We can estimate the SpO₂ accurately by this algorithm, and the result of the SpO₂ estimation is compared with a golden standard blood gas analysis method.