Figure 4. Epicardial mapping and ablation of an atrial tachycardia originating from the Bachmann’s bundle
Biatrial epicardial activation mapping of an atrial tachycardia appearing during the course of the stepwise endo-/epicardial ablation, antero-posterior view. Note that the site of earliest activation (red spot) is located epicardially, in the anatomical region of the Bachmann’s bundle (A); radiofrequency energy delivery in that site resulted in atrial tachycardia termination (B).