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Journal of Biomedical Optics

New mainstream double-end carbon dioxide capnograph for human respiration
Author(s): Jiachen Yang; Kun An; Bin Wang; Lei Wang
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Paper Abstract

Most of the current respiratory devices for monitoring CO2 concentration use the side-stream structure. In this work, we engage to design a new double-end mainstream device for monitoring CO2 concentration of gas breathed out of the human body. The device can accurately monitor the cardiopulmonary status during anesthesia and mechanical ventilation in real time. Meanwhile, to decrease the negative influence of device noise and the low sample precision caused by temperature drift, wavelet packet denoising and temperature drift compensation are used. The new capnograph is proven by clinical trials to be helpful in improving the accuracy of capnography.

Paper Details

Date Published: 1 November 2010
PDF: 10 pages
J. Biomed. Opt. 15(6) 065007 doi: 10.1117/1.3523620
Published in: Journal of Biomedical Optics Volume 15, Issue 6
Show Author Affiliations
Jiachen Yang, Tianjin Univ. (China)
Kun An, Tianjin Univ. (China)
Bin Wang, Beijing Research Institute of Automation Machinery Industry (China)
Lei Wang, Peking Union Medical College Hospital (China)


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