Table 1.
Patient characteristics and procedural details
| Characteristics | Total (n = 558) |
|---|---|
| Age (years), median (IQR) | 62 (56–68) |
| Male gender, n (%) | 392 (70.3) |
| Body mass index (kg/m2), median (IQR) | 27.1 (24.8–29.8) |
| Type of AF, n (%) | |
| Paroxysmal | 238 (42.7) |
| Persistent | 265 (47.5) |
| Long-standing persistent | 55 (9.9) |
| Left ventricular ejection fraction, n (%) | |
| ≥50% | 505 (90.5) |
| 40–49% | 36 (6.5) |
| <40% | 17 (3.0) |
| Duration of AF (years), median (IQR) | 5.1 (2.8–9.4) |
| History of ≥1 failed catheter ablation, n (%) | 295 (52.9) |
| Pre-operative pacemaker, n (%) | 34 (6.1) |
| Pre-operative cerebral events, n (%): | |
| Transient ischaemic attack | 32 (5.7) |
| Ischaemic stroke | 30 (5.4) |
| Haemorrhagic stroke | 7 (1.3) |
| Procedural details | |
| Confirmed pulmonary vein isolation, n (%) | 555 (99.5) |
| Additional lesions, n (%) | |
| Roof linea | 64 (11.5) |
| Posterior box | 431 (77.2) |
| Trigone | 277 (49.6) |
| ≥1 other additional lesionb | 76 (13.6) |
| Ganglionic plexus ablation | 365 (65.4) |
| Left atrial appendage exclusion, n (%) | 549 (98.4) |
AF, atrial fibrillation; IQR, interquartile range.
a
Roofline without floorline.
b
For example, Bicaval and/or right atrial lesion.