Atrial arrhythmia
Persistent AF
21 (88)
Long-duration AF
5 (21)
Perimitral flutter
5 (21)
Native (no previous AF ablation)
1 (5)
Post-AF ablation
4 (17)
Associated with documented AF
3 (13)
Left septal macro-reentry
1 (5)
Ablation lesions at the index procedure
PVI
20 (83)
Mitral isthmus line (endo)
24 (100)
Mitral isthmus line (epi, coronary sinus)
23 (96)
Roof line
21 (88)
Posterior wall isolation
9 (38)
Anterior mitral line
1 (5)
CFAE
6 (25)
CTI line
13 (54)
EIVM
VOM identified by fluoroscopy
24 (100)
Absence of pre-alcoolization scar in the VOM region
18 (75)
Surface of post-alcoolization scar in the VOM region, cm2
12.5 (7.6–15.7)
Success of PV, roof line and CTI bidirectional block
24 (100)
Success of mitral isthmus bidirectional block
20 (83)
Return to SR or organized AT by EIVM
10 (42)
Procedural characteristics
Procedural time, min
180 (155–210)
Radiofrequency duration, min
68.6 ± 6.1
Fluoroscopy dose, mGy.m-2
2.4 (1.7–4.3)