• Conf Proc IEEE Eng Med Biol Soc · Jan 2006

    Using a generalized neural network to identify airway obstructions in anesthetized patients postoperatively based on photoplethysmography.

    • Bethany R Knorr, Susan P McGrath, and George T Blike.
    • Institute for Security Technology Studies and Thayer School of Engineering, Dartmouth College, USA.
    • Conf Proc IEEE Eng Med Biol Soc. 2006 Jan 1; Suppl: 6765-8.

    AbstractPhotoplethysmography has been recently studied asa non-invasive indicator of circulatory and respiratory function. In this study, photoplethysmographic (PPG) data were recorded from patients under the influence of anesthesia, but not intubated. Both time and frequency domain features were extracted from the PPG and used as inputs to a neural network classifier. This classifier considers inter-subject variability so that it generalizes well to a large population. This classifier provided 86.1%accuracy to classify segments as being times of 'obstructed' vs.'normal' airways status.

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