A Nonlinear Circulatory Model for Artificial Heart Studies

  • P. Dietmar
  • F. Möller
  • Ewald Hennig
Conference paper
Part of the Informatik-Fachberichte book series (INFORMATIK, volume 71)

Summary

Animals with total artificial heart replacement (TAH) have survived for up to 9 months with manually controlled driving systems. A certain physiological control is provided by the animals intact peripheral regulation resulting in pathological venous hemodynamics, expressing the needs for a technical automatic control system, replacing the natural sympathetic stimulation and Starlings Law of the heart. A nonlinear dynamic mathematical model of the human cardiovascular system (CVSM) containing the systemic and pulmonary components was outlined and verified, which is employable to analyse the hemodynamic behaviour under normal and abnormal states. By modifying this model, assuming that cardiac output is constant at a preset level, the hemodynamic behaviour of a circulation system with an artificial heart was simulated. Comparing the simulation results with those from TAH experiments, a good accordance in the response of right atrial and aortic pressure under exercise conditions could be proven. This gives hope, that the modified and tested cardiovascular system model can be used as a tool for computing optimal control parameters under given conditions.

Keywords

Resis Peri Nism 

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References

  1. /HÖLL81/.
    Möller, D.: Ein geschlossenes nichtlineares Modell zur Simulation des Kurz- zeitverhaltens des Kreisiaufsystems und seine Anwendung zur Identifikation Springer Verlag, Berlin-Heidelberg-New York,1981 Google Scholar
  2. /HÖLL83a/.
    Möller, D.Popović, G. Thiele: Modeling, Simulation and Parameter-Estimation of the Human Cardiovascular System Vieweg Verlag, Braunschweig,1983 Google Scholar
  3. /HÖLL83b/.
    Möller, D.: Modelling and Simulation of the Longterm Behaviour of Arterial Pressure Regulation with the ais of a Block-Diagrammed Interactive Simulation System (to be published in this issue)1983 Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1983

Authors and Affiliations

  • P. Dietmar
    • 1
  • F. Möller
    • 1
  • Ewald Hennig
    • 2
  1. 1.Physiologisches Institut der Johannes GutenbergUniversität MainzMainzGermany
  2. 2.Chirurgische Klinik und Klinikum Charlottenburg derFreien Universität BerlinBerlin 19Germany

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