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Reconstruction of continuous brachial artery pressure wave from continuous finger arterial pressure in humans

  • Pandeng ZhangEmail author
  • Quanli Qiu
  • Yanxia Zhou
Special Issue Article
  • 76 Downloads

Abstract

Generalized transfer functions (GTFs) are available to compute the more relevant proximal blood pressure (BP) waveform from a more easily measured peripheral BP waveform. However, GTFs are based on the black box model. This paper presents a practical approach to reconstruct brachial artery pressure (BAP) distally from finger artery pressure (FAP). We assume that continuous BAP can be simply approximated by summing two halves of the continuous FAP shifted by the time delay. We firstly showed that the pressure wave in the finger artery can be considered twice as much as the forward/backward wave in the finger. A simplified individualized transfer function was then derived so as to estimate BAP from FAP. The effectiveness of the method was examined by experiment involving 26 healthy volunteers (26.7 ± 3.8 years old) in a resting state. By comparing with a reference BAP, we found that the proposed method can correct the FAP. The errors of the proposed method in estimating systolic and diastolic pressures are − 0.6 ± 6.0 and − 0.6 ± 3.7 mmHg, respectively. These results agree with the standard of Association for the Advancement of Medical Instrumentation (AAMI). We also found that the reconstructed BAP from FAP by terminal arterial occlusion technology (TAOT) is comparable to that of the artery occlusion technology (AOT). Our method or TAOT is promising in estimating continuous proximal blood pressure from peripheral blood pressure in practice.

Keywords

Arteries Blood pressure Physics-based model Individual parameter estimation 

Notes

Funding

This study was funded by the Shenzhen Science and Technology Innovation Commission (Grant No. KQCX2015033117354152).

Compliance with ethical standards

Conflict of interest

Author Pandeng Zhang has received research grants from the institutional review board of Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS).

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Australasian College of Physical Scientists and Engineers in Medicine 2018

Authors and Affiliations

  1. 1.Laboratory for Engineering and Scientific Computing, Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina
  2. 2.Shenzhen College of Advanced TechnologyUniversity of Chinese Academy of SciencesShenzhenChina
  3. 3.Department of NeurologyShenzhen Second People’s HospitalShenzhenChina

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