Noninvasive blood pressure measurement model based on characteristic parameters of PPG systolic upstroke waveform(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2022年第3期
- Page:
- 333-340
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- Noninvasive blood pressure measurement model based on characteristic parameters of PPG systolic upstroke waveform
- Author(s):
- PENG Li; SONG Xin; YAN Supeng; WEI Liang; GONG Yushun; LI Yongqin
- Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing 400038, China
- Keywords:
- Keywords: photoplethysmography blood pressure measurement systolic upstroke waveform characteristic parameter
- PACS:
- R318
- DOI:
- DOI:10.3969/j.issn.1005-202X.2022.03.013
- Abstract:
- Abstract: A model for noninvasive measurement of blood pressure based on the characteristics of the systolic upstroke waveform (SUW) of photoplethysmography (PPG) is proposed in this study. Firstly, lead II electrocardiogram (ECG), finger PPG signals and the blood pressure measured from a cuff-base electronic sphygmomanometer were recorded from 130 adult volunteers, and the data were randomly divided into a training set (n=80, 46 of which had normal blood pressure) and a test set (n=50, 35 of which had normal blood pressure). Some characteristics, such as upstroke time, area under SUW, tangent of the angle between the line of the maximum slope point to the trough point and the time axis, and the ratio of upstroke period to pulse width, were extracted from the SUW of PPG. The measurement models of systolic pressure and diastolic pressure were established by partial least square regression method. Finally, the performance of the proposed method was compared with the model based on pulse arrival time (PAT) and the model based on PAT combined with PPG. The correlation coefficients between the calculation results by the proposed model and the reference values were 0.80 and 0.62 for systolic pressure and diastolic pressure, respectively. The accuracy of the proposed model in finding abnormal blood pressure was 90%. These indicators were all significantly higher than those obtained by the model based on PAT combined with PPG (P<0.05). The study reveals that the SUW-based noninvasive blood pressure measurement model has improved robustness and better performance in finding abnormal blood pressure.
Last Update: 2022-03-28