Ablation procedure
The method of the cryoballoon ablation has been previously
described8. In brief, a steerable 15 Fr sheath
(Flexcath) and second-generation 28mm cryoballoon (Arctic Front Advance,
Medtronic) were inserted into the LA and advanced to the orifice of the
targeted PVs. Then, the cryoballoon PVI was started. The entire PVI
procedure was performed under ASV support.