Title :
Estimation of systolic blood pressure variations from pulse arrival time using a narrow-band filter
Author :
Chen, W. ; Kobayashi, T. ; Togawa, T. ; Ichikawa, S. ; Takeuchi, Y.
Author_Institution :
Dept. of Bioeng., Soka Univ., Tokyo, Japan
Abstract :
A narrow-band filtering method was explored to improve the correlation between systolic blood pressure (SEP) and pulse arrival time (PAT). The raw correlation coefficients among them on 15 subjects vary from 0.19 to 0.95. When the uncorrelated components in both signals were suppressed, the remained narrow-band components showed a fairly good linear correlation. The average correlation coefficient was up to 0.87 from 0.69, and the most striking one reached 0.99. The study implies that the narrow-band PAT may be used as a promising indicator of detecting the changes in systolic blood pressure and other physiological characteristics
Keywords :
blood pressure measurement; correlation methods; filtering theory; medical signal processing; average correlation coefficient; narrow-band components; narrow-band filtering method; pulse arrival time; signal processing; systolic blood pressure variations; Biomedical engineering; Blood pressure; Cardiology; Dentistry; Filtering; Filters; Narrowband; Signal detection; Signal processing; Surgery;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802297
