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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 10 — Apr. 1, 2014
  • pp: 2145–2151

Use of signal decomposition to compensate for respiratory disturbance in mainstream capnometer

Jiachen Yang, Haitao Wang, Bobo Chen, Bin Wang, and Lei Wang  »View Author Affiliations


Applied Optics, Vol. 53, Issue 10, pp. 2145-2151 (2014)
http://dx.doi.org/10.1364/AO.53.002145


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Abstract

End-tidal carbon dioxide (PETCO2) monitoring has become an important tool in clinical monitoring, but there are still limitations in practice. Low-frequency modulation was used to reliably acquire respiratory information. Then the disturbances of humidity and flow rate were removed by signal decomposition. Finally, the real-time concentration of CO2 was calculated and displayed by an adjusted calibration function. Targeted experiments confirm that a period of 180 ms and a depth of 50% was the optimal choice. In this case, the effects of humidity and flow rate reflected by different components were removed effectively from the capnography. This capnometer obtains capnography with excellent accuracy and stability in long-term continuous monitoring.

© 2014 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(120.3890) Instrumentation, measurement, and metrology : Medical optics instrumentation
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(170.4090) Medical optics and biotechnology : Modulation techniques

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: December 27, 2013
Revised Manuscript: February 24, 2014
Manuscript Accepted: February 24, 2014
Published: March 28, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Jiachen Yang, Haitao Wang, Bobo Chen, Bin Wang, and Lei Wang, "Use of signal decomposition to compensate for respiratory disturbance in mainstream capnometer," Appl. Opt. 53, 2145-2151 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-10-2145

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