Filament Dynamics during Simulated Ventricular Fibrillation in a High-Resolution Rabbit Heart

Figure 9

Relationship between 2D spiral wave dynamics and VF. (a) Results from 2D simulations (voltage snapshots in grayscale, tip trajectories in yellow). A rigidly rotating spiral wave (circular tip trajectory) is observed for ; a meandering tip for , however for break-up occurs. (b) Example of snapshots of filaments from corresponding 3D simulations (ms). Break-up occurs for all three parameter choices. (c) Number of filaments as a function of time. (Note: the relationship between number of filaments and number of rotors is discussed in Section 5.)

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