Table 2.
Procedural data | ||
---|---|---|
Patient cohort (n = 106) | Percentage | |
Rhythm at start of procedure, n (%) | ||
SR | 34 | 32.1% |
AF | 63 | 59.4% |
AFL | 4 | 3.8% |
AT | 4 | 3.8% |
Unknown | 1 | 0.9% |
Procedure time, h:min (defined as time of initial femoral venous access to end of procedure) | 3:18 ± 0:48 | |
Total fluoroscopy time, min | 25.6 ± 12.5 | |
Treatment received during initial procedure: | ||
Re-isolation of the PVs | 19 | 18.0% |
Re-isolation and ablation of PCPs | 56 | 52.8% |
Ablation of PCPs alone | 28 | 26.4% |
CTI/MIL/unknown | 3 | 2.8% |
Number of veins reconnected: | ||
0 | 31 | 29.2% |
1 | 22 | 20.8% |
2 | 30 | 28.3% |
3 | 12 | 11.3% |
4 | 11 | 10.4% |
Reconnected vein (number of points): | ||
Left superior pulmonary vein | 33 | 31.1% |
Left common pulmonary vein | 8 | 7.5% |
Left inferior pulmonary vein | 36 | 34.0% |
Right superior pulmonary vein | 42 | 39.6% |
Right inferior pulmonary vein | 43 | 40.6% |
Ablation time to re-isolate veins, min:sec | 8:30 ± 6:48 (n = 76) | |
Ablation time non-PV targets, min:sec | 26:12 ± 19:18 (n = 84) | |
Treatment to achieve terminal rhythm at initial procedure: | ||
SR with cardioversion (DCCV or pharmacologic) | 64 | 60.4% |
SR without cardioversion | 3111 | 29.2% |
No ablation, DCCV or Pharmacologic conversion attempteda | 10.4% | |
Rhythm at end of initial procedure: | ||
SR | 99 | 93.4% |
AFb | 6 | 5.7% |
AFL | 1 | 0.9% |
AF, atrial fibrillation; AFL, atrial flutter; AT, atrial tachycardia; CTI, cavotricuspid isthmus; DCCV, direct current cardioversion; MIL, mitral isthmus line; PCP, pathologic conduction pattern; PV, pulmonary vein; SR, sinus rhythm.
One site, n = 11 patients, as standard of practice does not cardiovert patients in AF at the end of the procedure allowing the patient to heal. Patients either self-convert or are cardioverted between 1 and 3 months after the procedure. Four of the six patients remaining in AF were from this site.
Four of the six patients remaining in AF at the end of the initial procedure were from this site.