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

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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.

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Funding

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

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Authors and Affiliations

  1. Laboratory for Engineering and Scientific Computing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China

    Pandeng Zhang & Quanli Qiu

  2. Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen, 518055, China

    Pandeng Zhang

  3. Department of Neurology, Shenzhen Second People’s Hospital, Shenzhen, 518035, China

    Yanxia Zhou

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  1. Pandeng Zhang
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  2. Quanli Qiu
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  3. Yanxia Zhou
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Correspondence to Pandeng Zhang.

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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).

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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.

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

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Zhang, P., Qiu, Q. & Zhou, Y. Reconstruction of continuous brachial artery pressure wave from continuous finger arterial pressure in humans. Australas Phys Eng Sci Med 41, 1115–1125 (2018). https://doi.org/10.1007/s13246-018-0652-9

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  • DOI: https://doi.org/10.1007/s13246-018-0652-9

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