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Tridimensional Distribution of Heart Potentials after Endocardial Stimulation

  • S. Baruffi
  • S. Spaggiari
  • E. Macchi
  • G. Arisi
  • D. Stilli
  • E. Musso
  • R. Th. van Dam
  • B. Taccardi

Abstract

The current interpretation of clinical electrocardiograms is based on the solid angle theory. The excitation wavefront is considered to act as a uniform layer of current dipoles which are oriented normally to the wavefront, with the positive poles pointing towards the resting tissue. This theory has been recently challenged by several authors (Corbin and Scher, 1977; Spach et al., 1979; Baruffi et al., 1978), who pointed out, that a new model of intracardiac generator should be developed, where the fiber direction (Corbin and Scher, 1977) and the conductivity along different axes (Spach et al., 1978) should be taken into account. However, it has not yet been established how far these factors affect the potential distribution in the extracardiac conducting media.

Keywords

Positive Pole Fiber Direction Conducting Medium Lead Point Current Dipole 
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.

References

  1. Baruffi, S., Spaggiari, S., Stilli, D. , Musso, E. , and Taccardi, B. , 1978, The importance of fiber orientation in determining the features of cardiac electric field, in: “Modern Electro-cardiology,” Z. Antaloczy, ed. Excerpta Medica, Amsterdam, pp. 89–92.Google Scholar
  2. Corbin, L. V., and Scher, A. M., 1977, The canine heart as an electrocardiographic generator: Dependence on cardiac cell orientation, Circulation Research, 41:58–67.PubMedGoogle Scholar
  3. Spach, M. S., Barr, R. C., Miller-Jones, E., Miller III W. T., and Warren, R. B., 1979, Origin of extracellular potentials of excitation waves in two-dimensional anisotropic cardiac muscle, in: Progress in Electrocardiology, P. W. Macfarlane, ed., Pitman Medical, Tunbridge Wells, pp. 105–109.Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • S. Baruffi
    • 1
  • S. Spaggiari
    • 1
  • E. Macchi
    • 1
  • G. Arisi
    • 1
  • D. Stilli
    • 1
  • E. Musso
    • 1
  • R. Th. van Dam
    • 1
  • B. Taccardi
    • 1
  1. 1.Institute of General PhysiologyUniversity of ParmaParmaItaly

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