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The Model of Vascular Bed for Estimation of Human Systemic Hydrohemodynamics

  • A.A. Tsvetkov
  • D.V. Nikolaev
  • V.A. Mozhaev
Part of the IFMBE Proceedings book series (IFMBE, volume 17)

Abstract

Existing methods of impedance cardiography for estimating blood flow parameters are based on measuring amplitude and temporal characteristics of pulse waves in specific points. Our aim was to improve the algorithm of blood flow analysis using continuous "integral amplitude" of rheogram. Also, we have developed the basic hemodynamics equation for our heterogeneous model taking into account anthropometric, morphologic and anisotropic of various body segments. The resulting formulas were adapted for the estimation of peripheral blood flow in major body segments (head, arms, legs and torso, including abdominal and thoracic region).A method of controlled systemic hemodynamics estimationis represented which utilizies an automatic commutation scheme with application of 5 electrode pairs on head an extremities. We describe the results og registration of blood flow redistributionbetween body segments during active orthostatic test with simultaneous control of a checksum, i.e. a difference between the volumes of central and peripheral blood flows.

Keywords

Pulse Wave Specific Resistance Regional Blood Flow Heterogeneous Model Impedance Cardiography 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Kubicek W G, Patterson R P, Witsoe D A (1970) Impedance cardiography as a noninvasive method of monitoring cardiac function and other parameters of the cardiovascular system. Ann N Y Acad Sci 170:724–732CrossRefGoogle Scholar
  2. 2.
    Faes Th J C, Kerkkamp H J J, Hoetink A E, Heethaar R M (2001) The unsolved outflow problem in impedance cardiography. Proceedings of XI-th International Conference on Electrical Bio-Impedance, Oslo, Norway, 17–21 June 2001, pp 527–530Google Scholar
  3. 3.
    Nyboer J, Bagno S, Barnett A, Halsey R H (1970) Impedance cardiograms and differentiated impedance cardiograms - The electrical impedance changes of the heat in relation to electrocardiograms and heart sounds. Ann N Y Acad Sci 170:421–426CrossRefGoogle Scholar
  4. 4.
    Tsvetkov A A, Nikolaev D V, Mozhaev V A (2006) A new approaches to system analysis of hemodynamics using BIA. Proceedings of 8th conference “Diagnosis and treatment of abnormal regulations in cardiovascular system” Moscow: Central Hospital of Ministry of Home Affairs of Russian Federation. pp 31–42 (in Russian)Google Scholar
  5. 5.
    Tsvetkov A A, Nikolaev D V, Mozhaev V A, Korostylev K A et al (2006) The method of system evaluation of body fluids and blood dynamics. Submitted for RF patent, No 2006124524 of 10.07.2006 (in Russian)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • A.A. Tsvetkov
    • 1
  • D.V. Nikolaev
    • 1
  • V.A. Mozhaev
    • 1
  1. 1.Scientific Research Centre “Medass”MoscowRussian Federation

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