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Observations on blood flow related electrical impedance changes in rigid tubes

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Summary

Mammalian blood in pulsatile flow through a rigid tube has been shown to be anisotropic with regard to its electrical conductivity. When flow increases there is a rise in conductivity in the longitudinal and a fall in the radial direction. These changes are caused by flow-dependent variations in the orientation of the disk-shaped erythrocytes.

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Visser, K.R., Lamberts, R., Korsten, H.H.M. et al. Observations on blood flow related electrical impedance changes in rigid tubes. Pflugers Arch. 366, 289–291 (1976). https://doi.org/10.1007/BF00585894

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Keywords

  • impedance cardiography
  • pulsatile blood flow
  • erythrocyte orientation
  • electrical conductivity of blood