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Effect of confounding factors on blood pressure estimation using pulse arrival time

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Authors
Kim, Jung Soo; Kim, Ko Keun; Baek, Hyun Jae; Park, Kwang Suk
Issue Date
2008-05-07
Publisher
Institute of Physics
Citation
physiological measurement, Vol. 29, Issue. 5, pp.615-624
Keywords
blodd pressure; pulse arrival time; PPG; arterial stiffness; confounding factor; multiple regression
Description
This paper describes advanced method for blood pressure estimation using pulse arrival time and two confounding factors that include information about heart cycle and arterial stiffness.
Abstract
Two confounding factors were selected and analyzed in blood pressure
estimation using pulse arrival time (PAT) for each individual. The heart
rate was used as the confounding factor for the cardiac cycle, and the
duration from the maximum derivative point to the dicrotic peak (TDB) in
the photoplethysmogram was used as another confounding factor representing
arterial stiffness. By considering these factors with PAT in multiple regression
analysis, the performance of blood pressure estimation is enhanced significantly
in the diastolic phase as well as in the systolic phase. The reproducibility of
this method was also validated with formerly obtained regression equations
from the training set. The correlation between estimated and measured blood
pressure decreased a little, but the validity was still maintained (r ∼=
0.8). This
shows the value of the method in non-intrusive blood pressure estimation for
individual patients and may be useful for various applications.
ISSN
0967-3334
Language
English
URI
http://hdl.handle.net/10371/1944
DOI
https://doi.org/10.1088/0967-3334/29/5/007
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College of Engineering/Engineering Practice School (공과대학/대학원)Program in Bioengineering (협동과정-바이오엔지니어링전공)Journal Papers (저널논문_협동과정-바이오엔지니어링전공)
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