Table 2: Procedural Characteristics:
Overall | Paroxysmal AF | Persistent AF | p-value | |
---|---|---|---|---|
N | 3139 | 1778 (56.6%) | 1361 (43.4%) | |
Peri-procedure AC strategy | 0.0134 | |||
Uninterrupted | 2280 (73.6%) | 1299 (74.4%) | 981 (72.4%) | |
Interrupted | 688 (22.2%) | 389 (22.3%) | 299 (22.1%) | |
Bridging | 132 (4.3%) | 58 (3.3%) | 74 (5.5%) | |
Pre-procedure Imaging | ||||
Preoperative TEE | 1535 (49.0%) | 762 (43.0%) | 773 (56.9%) | <0.0001 |
CT | 1889 (60.3%) | 1106 (62.3%) | 783 (57.7%) | 0.0079 |
MRI | 91 (2.9%) | 66 (3.7%) | 25 (1.8%) | 0.0019 |
Intra-procedure Imaging | ||||
Intra-cardiac echocardiography | 2867 (91.5%) | 1628 (91.8%) | 1239 (91.2%) | 0.5954 |
3D electroanatomic mapping | 2843 (90.8%) | 1602 (90.3%) | 1241 (91.4%) | 0.3008 |
Intra-operative TEE | 436 (13.9%) | 248 (14.0%) | 188 (13.8%) | 0.9134 |
Rotational angiography | 176 (5.6%) | 103 (5.8%) | 73 (5.4%) | 0.6042 |
Energy and catheter type | ||||
Irrigated RF with contact force | 2206 (70.5%) | 1222 (69.0%) | 984 (72.5%) | 0.0335 |
Irrigated RF without contact force | 271 (8.7%) | 135 (7.6%) | 136 (10.0%) | 0.0182 |
Cryoballoon | 743 (23.7%) | 468 (26.4%) | 275 (20.2%) | <0.0001 |
Other | 53 (1.7%) | 29 (1.6%) | 24 (1.8%) | 0.7788 |
Provocation testing* | ||||
Burst pacing | 1652 (68.5%) | 942 (67.9%) | 710 (69.4%) | 0.4222 |
Isoproternol | 1148 (47.6%) | 626 (45.1%) | 552 (51.0%) | 0.0040 |
Adenosine | 602 (25.0%) | 394 (28.4%) | 208 (20.3%) | <0.0001 |
Other | 224 (9.3%) | 149 (10.7%) | 75 (7.3%) | 0.0044 |
Procedure time (minutes) | ||||
Ablation time | 37 (17-59) | 35 (17.5-53) | 41 (17-67) | <0.0001 |
Fluoroscopy time | 16 (8-28) | 15 (7-26) | 18 (10-30) | <0.0001 |
Total procedure time | 180 (140-230) | 174 (137-218) | 190 (146-240) | <0.0001 |
Abbreviations: AF= atrial fibrillation; AC = anticoagulation; CT = computed tomography; MRI = magnetic resonance imaging; TEE = transesophageal echocardiography; RF = radiofrequency.
All patients in this cohort received provocation testing of some type.