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Using the features of the time and volumetric capnogram for classification and prediction

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Abstract

Quantitative features derived from the time-based and volumetric capnogram such as respiratory rate, end-tidal PCO2, dead space, carbon dioxide production, and qualitative features such as the shape of capnogram are clinical metrics recognized as important for assessing respiratory function. Researchers are increasingly exploring these and other known physiologically relevant quantitative features, as well as new features derived from the time and volumetric capnogram or transformations of these waveforms, for: (a) real-time waveform classification/anomaly detection, (b) classification of a candidate capnogram into one of several disease classes, (c) estimation of the value of an inaccessible or invasively determined physiologic parameter, (d) prediction of the presence or absence of disease condition, (e) guiding the administration of therapy, and (f) prediction of the likely future morbidity or mortality of a patient with a presenting condition. The work to date with respect to these applications will be reviewed, the underlying algorithms and performance highlighted, and opportunities for the future noted.

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Notes

  1. The continuous graphical time tracing of carbon dioxide from the breath.

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Acknowledgments

I would like to thank the following researchers and clinicians for their feedback during the preparation of this paper: John Anderson, Wanqun Bao, Neil Euliano, Julian Goldman, Nik Gravenstein, Mohsen Kazemi, Becky Mieloszyk, Joseph Orr, Adam Seiver, Franck Verschuren, and Kevin Ward.

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Correspondence to Michael B. Jaffe.

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The author worked previously for Philips Healthcare and currently works as a consultant as Cardiorespiratory Consulting, LLC.

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Jaffe, M.B. Using the features of the time and volumetric capnogram for classification and prediction. J Clin Monit Comput 31, 19–41 (2017). https://doi.org/10.1007/s10877-016-9830-z

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  • DOI: https://doi.org/10.1007/s10877-016-9830-z

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