Table 1: Clinical and echocardiographical characteristics of study population with (Group 1) and without (Group 2) AF recurrence.



Group 1 Group 2 p
Age (years) 69 9.2 66.6 9.3 n.s.
Male gender (%) 75 64.2 n.s.
Underlying heart disease (%) 36 30.0 n.s.
Previous electrical cardioversion (%) 12.5 10.0 n.s.
Duration of last AF episode (months) 14.5 22.6 3.7 2.5 < 0.05
Left atrial size (mm) 47.5 7.1 43.6 5.8 n.s.
Left ventricular diameter (mm) 50.1 7.9 53.4 4.1 n.s.
Left ventricular ejection fraction (%) 56.6 7.3 60.5 8.1 n.s.
Beta-blockers at the moment of EC (%) 29 25 n.s.
Antiarrhythmic drugs at the moment of EC (%) 50 45 n.s.