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

Cited 25 time in Web of Science Cited 27 time in Scopus
Authors
Kim, Jung Soo; Kim, Ko Keun; Baek, Hyun Jae; Park, Kwang Suk
Issue Date
2008-05-08
Publisher
Institute of Physics
Citation
Physiol Meas. 29(5) 615-24
Keywords
Algorithms*ArtifactsBlood Flow Velocity/*physiologyBlood Pressure/*physiologyBlood Pressure Determination/*methodsDiagnosis, Computer-Assisted/*methodsPulsatile Flow/*physiology*PulseReproducibility of ResultsSensitivity and Specificity
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 congruent with 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 (Print)
Language
English
URI
https://hdl.handle.net/10371/62538
DOI
https://doi.org/10.1088/0967-3334/29/5/007
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College of Medicine/School of Medicine (의과대학/대학원)Biomedical Engineering (의공학전공)Journal Papers (저널논문_의공학전공)
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