Bachmann’s Bundle Modification in Addition to Circumferential Pulmonary Vein Isolation for Atrial Fibrillation: A Novel Ablation Strategy

Figure 2

(a) Schematic diagram showing that BB modification was started from the roof of right superior PV toward the mitral annulus (12 o’clock direction in left anterior oblique view) ending at the level of the inferior base of left atrial appendage (LAA). Red tag represents ablation lesion. (b) Voltage and activation mapping performed after BB modification (CARTO picture/anteroposterior view). Voltage mapping (left) shows consecutive scar without gaps in the linear ablation lesions. Purple color represents the healthy area with an electrogram amplitude of ≥0.5 mV and red color represents voltage amplitudes of <0.15 mV. Activation mapping (right) shows significant conduction block along the linear ablation. SVC, superior vena cava; IVC, inferior vena cava; TA, tricuspid annulus; MA, mitral annulus; LAA, left atrial appendage; BB, Bachmann’s bundle.

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