Table 1: Patient Demographics.

Characteristic	All Subjects n=43
Male, n (%)	36 (84 %)
Age (years), Mean (SD) Range	58.6 (8.7) 38, 74
Pre-operative LA volume (ml), Mean (SD) Range	155.5 (48.4) 109, 342
Pre-operative LVEF, Mean (SD) Range	55 % (12 %) 20 %, 75 %
Atrial fibrillation type, N Paroxysmal AF Non-Paroxysmal AF	6 (14 %) 37 (86 %)
AF duration (months), Mean (SD)	45.4 (40.3)
Range	4, 180

AF = atrial fibrillation; LA = left atrium; LVEF = left ventricular ejection fraction; ml = millilitres; SD = standard deviation.