Table 2

Comparison between paroxysmal atrial fibrillation (AF) subjects undergoing cryoablation and radiofrequency ablation

Paroxysmal AF subjects undergoingCryoablation (n=90)Conventional Radiofrequency Ablation (n=53)p
Age (years)57.3±9.459.3±9.7NS
Men (%)7577NS
Mean LA diameter (mm)39.6±7.141.6±6.5NS
LVEDD (mm)49.5±6.747.8±6.5NS
Ejection fraction (%)65.0±8.860.3±7.3NS
Duration of AF (years)5.6±4.16.0±4.8NS
Number of failed antiarrhythmic drugs2.1±0.61.9±0.6NS
  • Hypertension

42 (47%)14 (26%)
  • Coronary artery disease requiring CABG or PCI

5 (6%)3 (6%)
Prior ablations
  • Cavotricuspid isthmus ablation

10 (11%)4 (8%)
  • CABG, coronary artery bypass graft; LA, left atrium; LVEDD, left ventricular end diastolic diameter; PCI, percutaneous coronary intervention.