Variable On-the-line group (n=11) Inside-line-group (n=10) Outside-line-group (n=2) P value
First-pass-isolation 10(90.9) 2(20.0) 2(100) 0.009
First isolation time (min) 17.5 ± 8.5 24.9 ± 9.9 19.5 ± 4.9 0.1889
Total number of energy applications 32.7 ± 11.0 34.5 ± 8.2 29.5 ± 3.2 0.7716
Total duration of energy applications (sec) 643.9 ± 231.4 691.8 ±163.3 589.5 ± 44.5 0.7484
PV reconnection 3 (27.3) 3 (30) 0 (0) 0.5236
Posterior wall isolation 6 (54.6) 3 (30) 1 (50) 0.5106
Additional carina ablation 0 (0) 8 (80) 0 (0) <0.001
Number of mapping points 2434.5 ± 761.8 1857.2 ± 675.2 2314.5 ± 526.8 0.1982
Pacing rate cycle length 600 ± 0 659 ± 83.2 635 ± 49.5 0.0827
Bachman breakthrough 11 (100) 10 (100) 1 (50) 0.0654
Distance from an EC site to anterior isolation line (mm) 0.8 ± 1.2 11.2 ± 3.6 7.1 ± 0.7 <0.001
Distance from an EC site to carina (mm) 21.0 ± 7.2 14.9 ± 6.9 25.3 ± 3.6 0.0745