Photoplethysmogram signal processing and analysis in evaluating arterial stiffness
Photoplethysmogram signal processing and analysis in evaluating arterial stiffness
复制标题
DOI：
10.1504/ijbet.2017.10003507
复制
发表时间：
2017-01-01
影响因子：
1.1
通讯作者：
Bereksi-Reguig, F.
中科院分区：
文献类型：
--
作者：
Bereksi-Reguig, Med Anes;Bereksi-Reguig, F.
本研究分析并处理光容积脉搏波（PPG）信号波形，以评估动脉僵硬度。事实上，PPG信号具有一些决定性的生理参数，用于评估动脉硬度。这些参数是通过对PPG信号的处理和分析确定的。确定的生理参数为增强指数AI和b/a比。这项工作实际上与AI和b/a比率的确定和分析有关。首先使用未消差小波变换（UWT）对采集到的PPG信号进行滤波，然后计算其二阶导数，然后进行峰谷检测，以确定AI和b/a比。然后对不同的健康和病理受试者评估和分析这些参数。所得结果表明，健康和病理受试者的AI和b/a比值不属于同一参数。
This study analyses and processes the photoplethysmographic (PPG) signal waveform in order to evaluate the arterial stiffness. In fact the PPG signal carries out some determinant physiological parameters which are used in evaluating arterial stiffness. These parameters are determined through the processing and analysis of the PPG signal. The determined physiological parameters are the augmentation index AI and the b/a ratio. The work is in fact related to the determination and the analysis of the AI and the b/a ratio. The acquired PPG signal is first filtered using the Undecimated Wavelet Transform (UWT), then its second derivative is calculated followed by a detection of peak and valleys in order to determine AI and b/a ratio. These parameters are then evaluated and analysed for different subjects healthy and pathologic. The obtained result shows that the AI and the b/a ratio are not in the same argument for the healthy and pathologic subject.