Conclusion:
In patients with paroxysmal AF undergoing CBA, the presence of an atypical anatomy with an LCPV had no effect on outcomes. In addition, PVA and anatomic indices of PV ovality were not predictive of recurrence of AA. Despite significant technological advancements in CBA therapy, the reasons for procedural failure are still incompletely understood. Pre-procedural anatomic assessment of the PV and LA continues to be an important tool to help guide successful CBA results. To fully understand the reasons for CBA procedural failure, larger controlled trials will be necessary.