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Main Title: In-ear photoplethysmography for central pulse waveform analysis in non-invasive hemodynamic monitoring
Author(s): Tigges, Timo
Rockstroh, Jonas
Pielmuş, Alexandru-Gabriel
Klum, Michael
Feldheiser, Aarne
Hunsicker, Oliver
Orglmeister, Reinhold
Type: Article
Language Code: en
Abstract: In recent years, the analysis of the photoplethys-mographic (PPG) pulse waveforms has attracted much research focus. However, the considered signals are primarily recorded at the fingertips, which suffer from reduced peripheral perfusion in situations like hypovolemia or sepsis, rendering waveform analysis infeasible. The ear canal is not affected by cardiovascular centralization and could thus prove to be an ideal alternate measurement site for pulse waveform analysis. Therefore, we developed a novel system that allows for highly accurate photoplethysmographic measurements in the ear canal. We conducted a measurement study in order to assess the signal-to-noise ratio of our developed system Hereby, we achieved a mean SNR of 40.65 dB. Hence, we could show that our system allows for highly accurate PPG recordings in the ear canal facilitating sophisticated pulse waveform analysis. Furthermore, we demonstrated that the pulse decomposition analysis is also applicable to in-ear PPG recordings.
Issue Date: 2017
Date Available: 31-Aug-2018
DDC Class: 570 Biowissenschaften; Biologie
Journal Title: Current directions in biomedical engineering
Publisher: De Gruyter
Publisher Place: Berlin
Volume: 3
Issue: 2
Publisher DOI: 10.1515/cdbme-2017-0122
Page Start: 587
Page End: 590
EISSN: 2364-5504
Appears in Collections:FG Elektronik und medizinische Signalverarbeitung » Publications

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