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The pulse signal in one cycle with Percussion Wave, Tidal Wave, Dicrotic Wave and Dicrotic Notch

The pulse signal in one cycle with Percussion Wave, Tidal Wave, Dicrotic Wave and Dicrotic Notch

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The pulse signal in one cycle with Percussion Wave, Tidal Wave,...
Example of calculating vascular age with IMT
The main research framework of this study
One example of MGM to fit original data
+1 The correlations of the chronological age (CA) with these six indices
Wrist pulse signal based vascular age calculation using mixed Gaussian model and support vector regression
Article
Full-text available
  • Apr 2022
Purpose Vascular age (VA) is the direct index to reflect vascular aging, so it plays a particular role in public health. How to obtain VA conveniently and cheaply has always been a research hotspot. This study proposes a new method to evaluate VA with wrist pulse signal. Methods Firstly, we fit the pulse signal by mixed Gaussian model (MGM) to ext...
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A novel method for vascular age estimation via pressure pulse wave of radial artery
Article
  • Sep 2022
  • BIOMED SIGNAL PROCES
Chronological age (CA) has been identified to be an important independent risk factor for cardiovascular disease. However, there are still some limitations for CA in evaluating the actual vascular aging due to the effect of lifestyles (EL). This study aexplores a new index vascular age (VA) to replace CA. Given that VA mainly depends on CA and EL, how to determine EL (AgeEL) becomes the key issue in this study. Firstly, we extract ten shape features called relative equal pressure pulse transit time (R-PTT) from the pulse signal as independent variables, and take CA as dependent variable to establish multiple linear regression (MLR) model. Secondly, we input these R-PTTs into the MLR model to calculate the predicted age (PAr) of each subject, and then adopt PAr as the reference for individual vascular aging. Thirdly, the expectation of the predicted ages (PAe) in each CA group is calculated to evaluate the collective vascular aging of the CA group. Finally, we obtain AgeEL according to PAr and PAe, and then estimate the value of VA. Overall, the VA achieved in this research is closer to six objective indirect indices describing vascular aging than CA, such as augmentation index (AIx), pulse transit time (PTT), diastolic augmentation index (DAI), etc. The VA obtained in this study is more effective in evaluating vascular aging than CA, which may be useful in screening premature vascular aging for young people in the field of public health.
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