Age at procedure, years 68.6 ± 6.1
Male sex 14 (58)
CHAD2S2VASc score 2 (1–3)
Hypertension 13 (54)
Diabetes 2 (8)
Stroke or TIA history 1 (5)
Structural heart disease 8 (33)
Ischemic
2 (8)
Valvular
6 (25)
LA sizea, cm2 28.4 ± 4.6
LVEFb, % 62 (55–75)
No. of previously failed lines of AAR drugs 2 (1–2)
Previously failed AAR drugs
Amiodarone
23 (96)
Flecainide
5 (21)
Propafenone
1 (5)
Sotalol
1 (5)
None
1 (5)
Time since first sustained atrial arrhythmia, months 60 (22–108)
Time since persistent AF installation, months 7 (4–11)
Previous ablations 12 (50)
Previous CTI ablation
12 (50)
Previous AF ablation
10 (42)
≥ 2 previous AF ablations
4 (21)
Previous PVI
10 (42)
Previous roof line
7 (29)
Previous CFAE ablation
3 (13)
Previous mitral isthmus line
0 (0)
Previous anterior mitral line
1 (5)