Clinical implications
In the present study, we investigated the SVC-ERP and inducibility of
SVC-AF after PVI because the frequency of SVC origin was the highest
among non-PV foci for AF. We revealed that the SVC-ERP was significantly
associated with pacing inducibility of AF after adjusting for a longer
SVC diameter. It was suggested that the measurement of the SVC-ERP may
predict SVC-AF. Furthermore, in our study, the dispersion of the SVC-ERP
did not contribute to arrhythmogenicity at least just above the SVC-RA
junction. Only the shortest SVC-ERP may be an indicator of SVC-AF
inducibility.