Variable Overall study population (n=2,791) (+) POAF     (n = 901) (-) POAF    
(n = 1,890)
P value
Aortic cross clamp time
(minutes)
63.8  ± 33.5 66.2 ± 34.3 62.8 ± 33 0.0124
Cardiopulmonary bypass (CPB) time (minutes) 102  ± 49.4 104.4 ± 45.5 101 ± 51.2 0.015
Venous grafts Number of vein grafts
(mean ± SD)
2372 (85%) 1.76 ± 0.78 772 (85.7%) 1.79 ± 0.77 1600 (84.7%) 1.74 ± 0.79 0.53 0.13
Right Internal
Mammary artery graft
130 (4.7%) 28 (3.1%) 102 (5.4%) 0.009
Left Internal Mammary
Artery graft
2461 (88.2%) 778 (86.3%) 1683 (89%) 0.045
Number of arterial grafts (mean ± SD) 1.12 ± 0.4 1.07 ± 0.34 1.14 ± 0.43 <0.0001
Intraoperative IABP 54 (1.9%) 18 (2%) 36 (1.9%) 0.97
Table 4: Intraoperative Variables based on the presence or absence of POAF.