All ATs (n = 27) Perimitral flutter (n = 15) Roof-dependent flutter (n = 7) CTI-dependent flutter (n = 5)
P value
Age, years Age, years 64 ± 7 65 ± 7 63 ± 7 61 ± 8 0.726
Male gender Male gender 19 (73) 10 (67) 6 (86) 3 (75) 0.641
Post AF ablation Post AF ablation 24 (92) 15 (100) 6 (86) 3 (75) 0.186
Lateral MI line 11 (42) 9 (60) 2 (29) 0 (0) 0.067
Roof line 10 (38) 8 (53) 1 (14) 1 (25) 0.179
CTI line 14 (54) 8 (53) 3 (43) 3 (75) 0.588
Defragmentation 13 (50) 8 (53) 3 (43) 2 (50) 0.901
Left atrial volume, cm3 Left atrial volume, cm3 86 ± 35 90 ± 33 65 ± 32 109 ± 40 0.156
Procedure time, min Procedure time, min 260 [210-330] 260 [194-360] 270 [221-275] 250 [210-353] 0.983
Fluoroscopy time, min Fluoroscopy time, min 64 ± 36 70 ± 35 68 ± 37 36 ± 33 0.247
Mapping points
Mapping points
15793 [10237-26462] 14849 [10711-20282] 28958 [17275-30762] 2753 [1219-16678] *
0.015
Mapped chamber volume, cm3 Mapped chamber volume, cm3 164 ± 38 162 ± 40 176 ± 28 188 ± 50 0.413
Total surface area, cm2 Total surface area, cm2 114 ± 20 110 ± 18 117 ± 19 157 ± 24 <0.001
Low-voltage area, cm2 Low-voltage area, cm2 62 ± 18 65 ± 16 61 ± 20 48 ± 7 0.133
TCL, ms TCL, ms 303 ± 65 297 ± 70 304 ± 57 319 ± 69 0.820
Entrainment pacing sites Entrainment pacing sites 4 [3-5] 4 [3-4] 4 [3-8] 3 [3-5] 0.791
PPI-TCL at BT site, ms PPI-TCL at BT site, ms 9 [0-15] 8 [0-15] 0 [0-14] 10 [10-20] 0.438
PPI-TCL at opposite site, ms PPI-TCL at opposite site, ms 10 [0-20] 5 [0-18] 20 [6-30] 20 [10-25] 0.095