Journal
BIOMEDICAL OPTICS EXPRESS
Volume 7, Issue 8, Pages 3007-3020Publisher
OPTICAL SOC AMER
DOI: 10.1364/BOE.7.003007
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Funding
- Hundred-Talent Program of Chinese Academy of Sciences
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We introduce and validate a beat-to-beat optical blood pressure (BP) estimation paradigm using only photoplethysmogram (PPG) signal from finger tips. The scheme determines subject-specific contribution to PPG signal and removes most of its influence by proper normalization. Key features such as amplitudes and phases of cardiac components were extracted by a fast Fourier transform and were used to train an artificial neural network, which was then used to estimate BP from PPG. Validation was done on 69 patients from the MIMIC II database plus 23 volunteers. All estimations showed a good correlation with the reference values. This method is fast and robust, and can potentially be used to perform pulse wave analysis in addition to BP estimation. (C) 2016 Optical Society of America
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