Novel strategy of remote magnetic navigation-guided ablation for ventricular arrhythmias from right ventricle outflow tract

Figure 1. Flow chart of mapping and ablation results.

Figure 2. Bipolar and unipolar electrogram at the site with earliest activation time below PV. (A) The point with special potential, (B) the point without special potential. In both figures, bipolar electrograms of distal pair were presented as the upper white line.

Figure 3. The influence of the special potential appearance to multiple mapping and ablation parameters including: (A) Earliest LAT at the site below the PV; (B) clinical time of the whole procedure; (C) total ablation time; (D) ablation area. NSP = Group of VAs with no special potential; NSP = Group of VAs with special potential; VAs of both NSP and SP group were successfully ablated below PV. PSC = Group of VAs that were finally eliminated in PSC. For all figures, *p < 0.05.

Figure 4. Examples of successful ablation below the PV in VAs with (A) or without (B) special potential. In each figure, the left panel shows the CARTO activation map of a PVC in the posterior–anterior view, while the local electrogram at the initial ablation site is shown in the right panel.

Figure 5. An example of successful ablation in the PSC. In the left panel, the local electrogram of the site with earliest activation time below the PV is presented. In the middle: the CARTO activation map of a PVC in the posterior–anterior view is shown, while fluoroscopic view in the anterior–posterior view is also presented in the bottom right corner. The blue dot points to the site where ablation led to the elimination of PVCs. The local electrogram of the site with earliest activation time during PSC mapping is presented in the right panel.