Table 1. Structural features of the pulmonary vein and left atrial diameter.

Variables	PV variation, n	LSPV, mm	LIPV, mm	RSPV, mm	RIPV, mm	OLPV, mm	ORPV, mm	OSPV, mm	OIPV, mm	LAD, mm
Overall	80	17.3±3.0	14.2±3.0	17.3±3.7	15.2±3.1	15.8±2.4	16.3±2.9	17.3±2.9	14.7±2.6	41.2±5.9
Non-recurrence group	68	17.1±3.1	14.1±3.1	17.2±3.9	15.1±3.0	15.6±2.5	16.1±2.9	17.1±3.0	14.6±2.5	40.7±5.6
Recurrence group	12	18.4±2.1	14.5±2.1	18.2±2.8	15.7±3.8	16.4±1.5	17.0±3.0	18.3±2.1	15.1±2.5	43.9±6.4
P value (Non-recurrence vs Recurrence group)	0.670	0.001	0.369	0.030	0.235	0.005	0.077	0.002	0.250	0.003

NOTE: PV, pulmonary vein; LSPV, left superior pulmonary vein; LIPV, left inferior pulmonary vein; RSPV, right superior pulmonary vein; RIPV, right inferior pulmonary vein; OLPV, overall left pulmonary vein; ORPV, overall right pulmonary vein; OSPV, overall superior pulmonary vein; OIPV, overall inferior pulmonary vein; LAD, left atrial diameter.