The Prevalence of Epicardial Reconnection Phenomenon in Acute PVR
The influence of epicardial myofibers on PV isolation were studied in
recent years[8-11]. The prevalence of remaining
epicardial connections after completed circular ablation could be up to
22%[9-11, 14]. Residual epicardial connections
could also be observed in repeat procedures[9],
suggesting that the restoration of epicardial PV conduction with
long-term endocardial block could be a common phenomenon, which worth
more attention for timely identification and intervention. Acute PVR
used to be considered as a similar concept with conduction
gap[15, 16]. In this study however, we found the
proportion of AEPVR higher than endocardial conduction gap as the type
of PVR, based on our ablation protocols.