TY - GEN
T1 - Photoplethysmography system for blood pulsation detection in unloaded artery conditions
AU - Grabovskis, A.
AU - Marcinkevics, Z.
AU - Rubenis, O.
AU - Rubins, U.
AU - Lusa, V.
PY - 2012
Y1 - 2012
N2 - Photoplethysmography (PPG) is an optical method of blood pulsation recording and has been extensively studied for decades. Recently PPG is widely used in the medical equipment for patient monitoring and in laboratories for research and physiological studies. In spite of the technological progress in the field of medical equipment, there are no generally accepted standards for clinical PPG measurements up to date. One of the most important factors affecting PPG waveform is the contact pressure between tissue and PPG probe. The aim of the current study was to develop and evaluate a system for software-assisted PPG signal acquisition from the unloaded artery. Novel PPG waveform derived Optimal Pressure Parameter (OPP) has been proposed as the reliable indicator of unloaded artery condition. We affirm that PPG measurements provided in balanced transmural arterial pressure conditions might serve as a reference for the unification of contact manner optical plethysmography methods. It is a step forward towards the standardization of the PPG methodology, and showed that the maximal value of the OPP, obtained in the particular experimental trial, indicates the optimal PPG probe contact pressure at that moment. Our developed system has been validated in the experimental series and showed the possibility of determining the correct PPG contact pressure value with high repeatability. It is concluded that this system can provide the necessary feedback to perform reliable PPG signal acquisition from the unloaded conduit artery.
AB - Photoplethysmography (PPG) is an optical method of blood pulsation recording and has been extensively studied for decades. Recently PPG is widely used in the medical equipment for patient monitoring and in laboratories for research and physiological studies. In spite of the technological progress in the field of medical equipment, there are no generally accepted standards for clinical PPG measurements up to date. One of the most important factors affecting PPG waveform is the contact pressure between tissue and PPG probe. The aim of the current study was to develop and evaluate a system for software-assisted PPG signal acquisition from the unloaded artery. Novel PPG waveform derived Optimal Pressure Parameter (OPP) has been proposed as the reliable indicator of unloaded artery condition. We affirm that PPG measurements provided in balanced transmural arterial pressure conditions might serve as a reference for the unification of contact manner optical plethysmography methods. It is a step forward towards the standardization of the PPG methodology, and showed that the maximal value of the OPP, obtained in the particular experimental trial, indicates the optimal PPG probe contact pressure at that moment. Our developed system has been validated in the experimental series and showed the possibility of determining the correct PPG contact pressure value with high repeatability. It is concluded that this system can provide the necessary feedback to perform reliable PPG signal acquisition from the unloaded conduit artery.
KW - Arterial photoplethysmography
KW - Optimal pressure parameter
KW - Probe contact pressure
KW - Transmural pressure
KW - Unloaded artery wall
UR - https://www.scopus.com/pages/publications/84861943442
UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/8427/1/Photoplethysmography-system-for-blood-pulsation-detection-in-unloaded-artery-conditions/10.1117/12.922649.short
U2 - 10.1117/12.922649
DO - 10.1117/12.922649
M3 - Conference paper
AN - SCOPUS:84861943442
SN - 9780819491190
VL - 8427
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Biophotonics
T2 - Biophotonics: Photonic Solutions for Better Health Care III
Y2 - 16 April 2012 through 19 April 2012
ER -