Gap Gap
With Without
n=48 n=742 p
Local impedance
Pre-ablation (absolute value), ohm 106 ± 13 116 ± 17 <0.001
Pre-ablation (difference from blood pool), ohm 17 ± 12 22 ± 16 0.023
Post-ablation (absolute value) 94 ± 12 93 ± 12 0.61
Post-ablation (difference from blood value) 5 ± 10 0 ± 11 <0.001
Change 12 ± 7 23 ± 12 <0.001
Generator impedance
Pre-ablation 104 ± 10 108 ± 15 0.03
Post-ablation 89 ± 8 93 ± 11 0.047
Change 12 ± 7 14 ± 10 0.10