Table 6. The atrial substrate characteristics and the outcome of AF ablation.
| Group | Case number | LA bipolar voltage (mV) | Scar-zone index | LVZ index | LA single voltage (mV) | Atrial TAT [ms] | LA TAT [ms] |
|---|---|---|---|---|---|---|---|
| PAF | |||||||
| Success group | 107 | 1.77±1.01 | 0 (0-0) | 0.067 (0.07-0.116) | 3.72±1.9 | 228 [174-265] | 217 [137-245] |
| Recurrence group | 29 | 1.29±0.93* | 0.0004* (0-0.018) | 0.139* (0.067-0.178) | 2.79±1.4 | 222 [165-260] | 201 [135-241] |
| Persistent AF | |||||||
| Success group | 62 | 1.31±0.96 | 0.005 (0-0.024) | 0.147 (0.068-0.207) | |||
| Recurrence group | 15 | 0.78±0.35* | 0.012* (0-0.036) | 0.285* (0.165-0.378) |
TAT, total activation time; LVZ, low voltage zone; AF, atrial fibrillation; LA, left atrial; PAF paroxysmal AF. *, P<0.05 success group vs. recurrence group.