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Skin temperature oscillation model for assessing vasomotion of microcirculation

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Abstract

It has been proved that there exists a certain correlation between fingertip temperature oscillations and blood flow oscillations. In this work, a porous media model of human hand is presented to investigate how the blood flow oscillation in the endothelial frequency band influences fingertip skin temperature oscillations. The porosity which represents the density of micro vessels is assumed to vary periodically and is a function of the skin temperature. Finite element analysis of skin temperature for a contra lateral hand under a cooling test was conducted. Subsequently, wavelet analysis was carried out to extract the temperature oscillations of the data through the numerical analysis and experimental measurements. Furthermore, the oscillations extracted from both numerical analyses and experiments were statistically analyzed to compare the amplitude. The simulation and experimental results show that for the subjects in cardiovascular health, the skin temperature fluctuations in endothelial frequency decrease during the cooling test and increase gradually after cooling, implying that the assumed porosity variation can represent the vasomotion in the endothelial frequency band.

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Authors and Affiliations

  1. School of Energy and Power Engineering, Dalian University of Technology, 116023, Dalian, China

    Yuan-Liang Tang & Ying He

  2. Department of Modern Mechanics, University of Science and Technology of China, 230022, Hefei, China

    Hong-Wei Shao

  3. Institute of Continuous Media Mechanics, Ural Branch of Russian Academy of Science, Perm, Russian Federation

    Irina Mizeva

Authors
  1. Yuan-Liang Tang
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  2. Ying He
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  3. Hong-Wei Shao
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  4. Irina Mizeva
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Corresponding author

Correspondence to Ying He.

Additional information

The project was supported by Anhui Provincial Natural Science Foundation of China (11040606M09).

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Tang, YL., He, Y., Shao, HW. et al. Skin temperature oscillation model for assessing vasomotion of microcirculation. Acta Mech Sin 31, 132–138 (2015). https://doi.org/10.1007/s10409-015-0011-y

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  • DOI: https://doi.org/10.1007/s10409-015-0011-y

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