Figure 6. Distribution of the EVA sites in patients who had non-ipsilateral-matching IA. (A) The circles denoted the EVA sites with IA success and failure. (B) The circles denoted the EVA sites with ineffective and effective ablation during IA. The black arrow marked the farthest EVA site to PVVJ (-5.7mm) with effective ablation. (C) The circles denoted the EVA sites in total patients. The EVA site (black arrow) in PA was excluded. The dashed box denoted the EVA sites located from -5.7mm to 10.0mm, estimating that 54/60(90.0%) patients could have effective ablation by supravalvular strategy. The dotted box denoted the EVA sites from RVOT to +5.7mm above PVVJ, estimating that the subvalvular strategy could have effective ablation in 52/60(86.7%) patients.
Abbreviations: EVA=earliest ventricular activating, IA=initial ablation, PA=pulmonary artery, PVVJ=pulmonary valve-ventricle junction.