Multi-Wavelength Photoplethysmography Device for the Measurement of Pulse Transit Time in the Skin Microvasculature
| Autor: | Tuukka Panula, Matti Kaisti, Jukka-Pekka Sirkia |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0303 health sciences
Materials science Pulse (signal processing) 0206 medical engineering Multi wavelength 02 engineering and technology Pulse Transit Time 020601 biomedical engineering Signal Microcirculation 03 medical and health sciences Wavelength Photoplethysmogram Penetration depth 030304 developmental biology Biomedical engineering |
| Zdroj: | CinC |
| ISSN: | 2325-887X |
| DOI: | 10.22489/cinc.2020.179 |
| Popis: | The purpose of this study was to develop a multiwavelength photoplethysmography (MWPPG) device for studying the skin microvasculature. Microvasculature, in general, is an important part of the cardiovascular system because of its role in microcirculation, which manages tissue nutrient and oxygen supply, and where much of the peripheral resistance occurs. The developed device utilises the fact that the penetration depth of light into the skin is depended on the light wavelength. Thus, an MWPPG device utilising multiple different wavelengths of light allows the studying of blood vessels at different depths. The device proved to produce good quality signal making it possible to compute the small time differences between the pulses measured at different wavelengths, and hence enabling the computation of pulse transit times in the skin microvasculature (PTT M ). The order of the computed PTT M values are in line with the theory of how deep each wavelength of light penetrates into the skin. The results could be used in hemodynamic monitoring. |
| Databáze: | OpenAIRE |
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