Key result
In a computer model of rabbit ventricles, increasing Purkinje-Myocyte Junction density increased the mean firing rate in the Purkinje system and epicardial wave breaks, but densities above 13/cm2 did not alter reentry dynamics.
Why the study?
Does varying Purkinje-Myocyte Junction density alter reentry dynamics during ventricular fibrillation in a computer model of rabbit ventricles?
Does varying Purkinje-Myocyte Junction density alter reentry dynamics during ventricular fibrillation in a computer model of rabbit ventricles?
Computational modeling demonstrates that Purkinje system topology and the density of Purkinje-Myocyte Junctions significantly affect reentry dynamics during ventricular fibrillation.
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May guide Purkinje system simulations in VF research; leaves open clinical relevance in humans.
Behradfar et al. (2014) studied Ventricular Arrhythmia. Varying Purkinje-Myocyte Junction (PMJ) density vs. Different PMJ densities was evaluated on Reentry dynamics (mean firing rate, wave break incidence, bidirectional propagation). In a computer model of rabbit ventricles, increasing Purkinje-Myocyte Junction density increased the mean firing rate in the Purkinje system and epicardial wave breaks, but densities above 13/cm2 did not alter reentry dynamics.
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