Key result
A computational model using porous media theory successfully predicted temperature fields and necrotic regions during radiofrequency cardiac ablation under varying velocities and voltages.
Why the study?
The study was conducted to analyze whether the porous media theory, recently proposed for bioengineering applications, can be applied to model radiofrequency cardiac ablation.
Applying the porous media theory to model radiofrequency cardiac ablation provides a robust computational method to predict temperature fields and tissue damage during arrhythmia treatment.
Supports computational advances in ablation modeling; leaves open clinical utility pending validation.
Purpose Recently, the porous media theory has been successively proposed for many bioengineering applications. The purpose of this paper is to analyze if the porous media theory can be applied to model radiofrequency (RF) cardiac ablation. Design/methodology/approach Blood flow, catheter and tissue are modeled. The latter is further divided into a fluid and a solid phase, and porous media equations are used to model them. The heat source term is modeled using the Laplace equation, and the finite element method is used to solve the governing equations under the appropriate boundary conditions and closure coefficients. Findings After validation with available literature data, results are shown for different velocities and applied voltages to understand how these parameters affect temperature fields (and necrotic regions). Research limitations/implications The model might require further validation with experiments under different conditions after comparisons with available literature. However, this might not be possible due to the experimental complexity. Practical implications The improvement in predictions from the model might help the final user, i.e. the surgeon, who uses cardiac ablation to treat arrhythmia. Originality/value This is the first time that the porous media theory is applied to RF cardiac ablation. The robustness of the model, in which many variables are taken into account, makes it suitable to better predict temperature fields, and damaged regions, during RF cardiac ablation treatments.
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Iasiello et al. (2019) studied Arrhythmia. Porous media theory modeling was evaluated on Temperature fields and necrotic regions. A computational model using porous media theory successfully predicted temperature fields and necrotic regions during radiofrequency cardiac ablation under varying velocities and voltages.
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