Key result
Finite element modeling demonstrated that patch-patch electrode configurations best deliver energy to the myocardium, despite nonuniform distributions and edge effects.
Why the study?
Which electrode configuration best delivers energy to the myocardium during internal defibrillation?
Which electrode configuration best delivers energy to the myocardium during internal defibrillation?
Finite element modeling suggests that patch-patch electrode configurations are optimal for delivering energy to the myocardium during internal defibrillation.
Modeling favors patch-patch electrodes for myocardial energy delivery; leaves open clinical validation in internal defibrillation.
A study of electric fields in internal defibrillation is conducted to determine optimum configurations for energy delivery. A three-dimensional model of the heart is constructed from 1473 cubic elements. The electric field is determined by finite-element analysis. Three electrode configurations (patch-patch, catheter-patch, and catheter-catheter) are evaluated. The simulations show that (1) the patch-patch configurations best delivers energy to the myocardium, and (2) electrode placement and size have minimal effect on the total energy delivered to the myocardium, and (3) nonuniform distributions and high current concentrations and edge effects are nevertheless observed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Thakor et al. (2003) studied Internal defibrillation. Electrode configurations (patch-patch, catheter-patch, catheter-catheter) was evaluated on Energy delivery to the myocardium and electric field distribution. Finite element modeling demonstrated that patch-patch electrode configurations best deliver energy to the myocardium, despite nonuniform distributions and edge effects.
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