Conclusion
Epicardial reconnection accounted for the majority of acute PVR in this
study, which had difference to endocardial gap in observation time,
distribution and EGMs and showed similarity to epicardial PVR in repeat
procedures. Presence of AEPVR was independently associated with a
smaller left atrium and multiple ablation parameters, which could be
explained by nondurable transmural lesion or late manifestation of
non-preferential conduction. A sufficient waiting period with detailed
mapping for AEPVR is of vital importance to achieve durable isolation.