Table 1

Baseline characteristics of paroxysmal and persistent atrial fibrillation (AF) subjects undergoing cryoablation

Paroxysmal AF (n=90)Persistent AF (n=34)p
Age (years)57.3±9.461.7±10.40.01
Men (%)7582NS
Mean LA diameter (mm)39.6±7.143.1±7.00.04
LVEDD (mm)49.5±6.750.9±7.4NS
Ejection fraction (%)65.0±8.864.0±10.1NS
Duration of AF (years)5.6±4.15.8±3.3NS
Number of failed antiarrhythmic drugs2.1±0.62.1±0.6NS
Comorbidities
  • Hypertension

42 (47%)20 (59%)
  • Coronary artery disease requiring CABG or PCI

5 (6%)0
Prior ablations
  • Cavotricuspid isthmus ablation

10 (11%)3 (9%)
  • CABG, coronary artery bypass graft; LA, left atrium; LVEDD, left ventricular end diastolic diameter; PCI, percutaneous coronary intervention.