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. 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.