. Author manuscript; available in PMC: 2015 Jan 2.

Published in final edited form as: J Cardiovasc Electrophysiol. 2014 Jul 23;25(9):921–929. doi: 10.1111/jce.12474

TABLE 1.

Clinical Characteristics of Population

Characteristic	All Patients	First Ablation	Prior Failed PVI	P value
Number of patients	78	40	38
AF type (N [%])				0.10
Paroxysmal	24 (29.5%)	8 (20.0%)	16 (39.5%)
Persistent	47 (61.5%)	28 (70.0%)	19 (52.6%)
Longstanding persistent	7 (9.0%)	4 (10.0%)	3 (7.9%)
Age (years)	61.3 ± 10.1	61.6 ± 10.9	60.9 ± 9.4	0.77
Gender (Male/female)	55/23	28/12	27/11	0.55
Left atrial diameter (mm)	56 ± 9	56 ± 9	57 ± 10	0.78
No. with LA >55 mm (%)	38 (50.4%)	18 (45%)	20 (52.6%)	0.43
LVEF (%)	55 ± 8	54 ± 8	56 ± 8	0.28
Remote amiodarone use (N [%])	12 (15.4%)	5 (12.5%)	7 (18.4%)	0.47

AF = atrial fibrillation; PVI = pulmonary vein isolation; LA = left atrium; LVEF = left ventricular ejection fraction; Remote amiodarone = prior treatment with amiodarone. P value for AF type was assessed by Fisher’s test with Freeman–Halton extension.