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Figure 2 Creation of Complete Atrioventricular Block

Complete atrioventricular block created by isolation of a small atrial segment surrounding the atrioventricular node and the His bundle. Complete atrioventricular block emerged on completion of the linear ablation with junctional rhythm at 65 beats/min in the ventricles and sinus rhythm at 95 beats/min in the atria. The recordings from top to bottom are a modified lead II surface electrocardiogram (II), right atrial electrogram (RA), left atrial electrogram (LA), right ventricular electrogram (RV), left ventricular electrogram (LV), recording from pacing lead inserted into the small isolated atrial segment (PACE), and left ventricular pressure (LVP).