Study limitations
First, this was a single-center, non-randomized study with a small
population. We were unable to compare patients who underwent CBA for PVI
and LA roof ablation with patients who underwent CBA for PVI alone;
therefore, a larger, randomized multicenter study is required. Second,
although we performed CBA under LET monitoring, data regarding the nadir
LET during CBA >18°C are missing; thus, we could not
sufficiently argue for the association between nadir LET and GH or the
cutoff value of LET during CBA. Finally, as patients were scheduled for
discharge 2 days after ablation, we could not sufficiently assess their
symptoms 1 week after ablation.