Conclusions
In the prospective single-center open-level randomized trial, half of
the origins in idiopathic RVOT-type VAs were above the PV, and most were
close to the PVVJ. The supravalvular and subvalvular strategies were not
different in IA success rate, ablation application, complication, and VA
recurrence. However, they complement locating the EVA sites and
facilitate the ipsilateral ablation, which produces a significantly
higher success rate.