Table 1.

Anatomic variants of the pulmonary veins in 147 consecutive patients with atrial fibrillation undergoing a 64-slice computed tomography scan the day before the ablation procedure

Anatomy	n (%)
Four distinct PV oses	81 (55)
Common os	66 (45)
Left PVs	55
Right PVs	7
Left and right PVs	1
Inferior PVs	3
Adjunctive PVs	21 (14)
Right	16
Left	21
Roof	4

¹1 patient showed an adjunctive pulmonary vein both right and left. PV: Pulmonary vein.