28 October 2025 : Clinical Research
Effect of Mitral Isthmus Ablation on Recurrence Rates in High-Burden Paroxysmal Atrial Fibrillation
Luqian Cui ABCDEF 1, Hailan Wang BDEF 2, Jingchao Li AE 3, Haijia Yu E 3, Huihui Song BE 3, Yingjie Chu AEG 3, Shujuan Dong AE 3*DOI: 10.12659/MSM.950108
Med Sci Monit 2025; 31:e950108
Table 2 Procedural and ablation data of the 2 groups.
| Procedural outcome | 2C1L group (n=51) | 2C group (n=102) | P value |
|---|---|---|---|
| Total procedural time (min) | 137.6±18.5 | 122.6±19.6 | <0.001 |
| Total operation time (min) | 59.7±8.8 | 51.8±8.8 | <0.001 |
| Fluoroscopy time (min) | 14.1±2.7 | 7.2±2.7 | <0.001 |
| Low voltage zone | 22 (43.1%) | 40 (39.2) | 0.641 |
| PVI circles success | 102 (100%) | 204 (100%) | |
| Left PVI circles | |||
| First-pass isolation (n/%) | 48/51 (94.1%) | 81/102 (79.4%) | 0.034 |
| Acute PVR (n/%) | 2/51 (3.9%) | 5/102 (4.9%) | 1.000 |
| Touch-up sites | 3.0 (2.0, 4.0) | 6.0 (5.0, 8.0) | 0.001 |
| Right PVI circles | |||
| First-pass isolation (n/%) | 43/51 (84.3%) | 84/102 (82.4%) | 0.761 |
| Acute PVR (n/%) | 2/51 (3.9%) | 3/102 (2.9%) | 1.000 |
| Touch-up sites | 4.0 (2.8, 5.0) | 5.0 (3.5, 6.0) | 0.973 |
| PVI – pulmonary vein isolation; PVR – pulmonary vein reconnection. | |||