Abstract:
The heart is a very complex organ with different physical characteristics. Numerical
and experimental research has shown that the electrophysiological results of patients
can be impacted by the effects of temperature and magnetic radiation. In this work,
we developed a model of cardiac electrophysiology under the influence of temperature
and radiative magnetic field. The ionic current model was modeled by the bivariate
Karma model, we used the Pennes bio-heat equation for the temperature effects. All
governing equations were solved using the finite element method and the algorithm was
implemented using the open source software FEniCs. The effect on the action potential
duration (APD) is studied in relation to the magnetic effects. We also analyzed the
temperature effects at (35 − 39 ◦C). It was found that the APD peak decreased by
21% due to an increase in the magnetic effect from 0.0004 to 0.009 and the increase in
magnetic intensity stops spiral wave formations. Spiral wave formations are observed for
the temperature of 37 ◦C and they disappear at any significantly high (39 ◦C, 43 ◦C)
or low (28 ◦C) temperature. This study concludes that the radiative magnetic field
does not have a great impact when the tissue is hypothermic. Radiative magnetic fields
dissipate the spiral waves and rise drift of spiral waves and turbulence induces chaos,
and chaos damage the cardiac muscles. Furthermore, we also saw that the radiative
magnetic field could modulate the electrical activity field and control the conduction
disorder.
