Table 1.
Baseline Characteristics of study population and CB PVI Procedure Parameters
| Baseline Characteristics | |
|---|---|
| Age (years) | 56.8 ± 12.5 |
| Gender, male | 32(53.3) |
| BMI (kg/m2) | 24.6 ± 3.1 |
| AF type, paroxysmal AF | 58 (96.7) |
| AF duration (months) | 25.5 (12, 69) |
| CHA2DS2-VASc score | 1(0, 2) |
| LAD (mm) | 35.2 ± 4.8 |
| LVEF (%) | 65.6 ± 5.4 |
| Procedure Parameters | |
| Balloon type, 28-mm /23-mm/double | 34 (56.7) / 24(40) / 2(3.3) |
| Nº. of freeze | 10.8 ± 3.2 |
| Acute PVI | |
| Patient level * | 60(100) |
| With CB only, PV level# | 225 (94.5) |
| With CB only, patient level | 51(85) |
| Complications | 4 (6.7) |
| Phrenic nerve palsy | 1 (1.7) |
| Pericardial & pleural effusion | 1 (1.7) |
| Left groin hematomas | 2 (3.3) |
Values are n (%), mean ± SD, or median (interquartile range). CB: cryoballoon; PVI: pulmonary vein isolation; PV: pulmonary vein; AF: atrial fibrillation; BMI: body mass index; LAD: left atrial diameter; LVEF: left ventricular ejection fraction (measured from transthoracic echocardiography); CHA2DS2-VASc score = stroke risk score [cardiac failure, hypertension, age ≥ 75 years (doubled), diabetes, stroke (doubled)‑vascular disease, age of 65-74 years and sex category (female)].
*
PVI with CB ablation only or plus conventional RF ablation.
#
1 right superior and 1 right inferior PV has no potential