Study of the correlation between the blood pressure variability and the variabilities in photoplethysmography parameters
10.3760/cma.j.issn.1673-4181.2011.06.001
- VernacularTitle:血压变异性和容积脉搏波特征参数变异性的关联分析
- Author:
Daying CHE
;
Ping YANG
;
Yuanting ZHANG
- Publication Type:Journal Article
- Keywords:
Blood pressure variability;
Photoplethysmography;
Correlation analysis
- From:
International Journal of Biomedical Engineering
2011;34(6):321-324,330
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the correlation between blood pressure variability and variabilities of some feature variables extracted from photoplethysmography (PPG) signal.Methods Continuous blood pressure (BP) and PPG signal were collected simultaneously from 19 healthy subjects under rest and after exercise.Eight feature variables were extracted from the PPG signal.The relationship between the beat-to-beat variability of BP and feature variables extracted from PPG were quantified by calculating Person's correlation coefficient.Results The variability of the amplitude of PPG was highly correlated with systolic BP variability both under rest (0.75) and after exercise (0.76).Meanwhile,the correlations between systolic BP variability and the variability of the time from the trough to the dicrotic north were 0.74(under rest) and 0.78(after exercise).Conclusion The amplitude variability of PPG is highly correlated with systolic BP variability and can be potentially used for monitoring BP variability.
