Table 1.
Differences in baseline characteristics between patients treated by means of radiofrequency pulmonary vein isolation or cryoablation.
| All Patients (n = 20) |
RF Ablation (n = 13) |
Cryoablation (n = 7) | p Value | |
|---|---|---|---|---|
| Median Age (years) | 65.2 (61.4–72.7) | 65.1 (61.1–67.3) | 72.7 (63.1–77.2) | p = 0.1 |
| CHA2DS2-VASc | 2.0 (1.0–2.5) | 2.0 (1.0–2.0) | 2.0 (1.0–3.0) | p = 0.5 |
| Female sex | 8 (40.0%) | 5 (38.5%) | 3 (42.8%) | p = 0.1 |
| LVEF (%) | 59% (55–61) | 60% (55–62) | 60% (56–63) | p = 0.2 |
| Clinical History | ||||
| Arterial Hypertension | 13 (68.4%) | 7 (53.8%) | 6 (85.7%) | p = 0.3 |
| Smoke habit | 5 (25.0%) | 2 (15.3%) | 3 (42.8%) | p = 0.2 |
| Diabetes mellitus | 1 (5.0%) | 1 (7.6%) | 0 (0%) | p = 0.1 |
| Pre ablation AAD | 3 (15.0%) | 2 (15.3%) | 1 (14.2%) | p = 0.1 |
| LAVi (mL/m2) | 30.7 (26.7–38.0) | 32.8 (28–41.0) | 27.4 (23.8–31.0) | p = 0.4 |
| Type of atrial fibrillation | ||||
| Paroxysmal AF | 13 (65.0%) | 8 (61.5%) | 5 (71.4%) | p = 0.1 |
| Persistent AF | 7 (35.0%) | 5 (38.4%) | 2 (28.5%) | p = 0.1 |
| PV resection | ||||
| Pneumectomy | 5 (25.0%) | 4 (30.7%) | 1 (14.2%) | p = 0.6 |
| Lobectomy | 15 (75.0%) | 9 (69.2%) | 6 (85.7%) | p = 0.5 |
| RSPV | 6 (30.0%) | 5 (38.4%) | 1 (14.2%) | p = 0.01 |
| RIPV | 4 (20.0%) | 0 (0%) | 4 (57.1%) | p = 0.01 |
| LSPV | 4 (20.0%) | 3 (23.1%) | 1 (14.2%) | p = 0.01 |
| LIPV | 1 (5.0%) | 0 (0%) | 1 (14.2%) | p = 0.01 |
| Septal PVs | 2 (10.0%) | 2 (15.3%) | 0 (0%) | p = 0.6 |
| Lateral PVs | 3 (15.0%) | 2 (15.3%) | 1 (14.2%) | p = 0.7 |
LVEF, left ventricle ejection fraction; AAD, anti-arrhythmic drugs; LAVi, left atrial volume index; AF, atrial fibrillation; RSPV, right superior pulmonary vein; RIPV, right inferior pulmonary vein; LSPV, left superior pulmonary vein; LIPV, left inferior pulmonary vein. p-values express the comparison between RF ablation group and the cryoablation group.