Delayed efficacy of radiofrequency catheter ablation on arrhythmias originating in the interventricular basal septum

Figures

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  Figure 1. A 12‐lead electrocardiogram of the clinical arrhythmia. PVCs have RBBB and inferior QRS axis

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  Figure 2. Mapping and ablation of the LV. Activation map of the LV guided by ICE (A). Surface lead recordings during PVC and recordings from a multipolar catheter located in proximity of the anterior part of the AMC (Map 1‐2 indicates distal electrode pair; Map 3‐4 indicates proximal electrode pair). The earliest site was recorded by the distal electrode pair Map 1‐2 preceding the onset of PVC by 28 ms (B). The suppression of PVCs during RF energy delivery (C)

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  Figure 3. Activation map of the left and right interventricular basal septum. Endocardial breakthrough sites of VA and the sites of RFCA are shown