Table 2.

Perioperative characteristics of subjects with no atrial fibrillation (NAFIB) and atrial fibrillation (AFIB)

Characteristica	NAFIB		AFIB		p
	n	%	n	%
Surgical procedure					.059
Standard CABG	482	66.9	238	33.1
MIDCAB	72	76.6	22	23.4
No. of vessels bypassed					.013
One	87	15.7	21	8.1
Two	59	10.7	25	9.6
Three	159	28.8	75	28.8
Four	185	33.5	95	36.5
Five or more	63	11.4	44	16.9
Name of vessels bypassed (each subject may have >1)
LIMA to LAD	463	83.5	228	87.5	.108
SVG to LAD	68	10.8	22	8.5	.106
Radial to LAD	0		1	0.4	.144
RIMA to RCA	11	1.9	1	0.4	.078
SVG to RCA	108	19.5	46	17.7	.549
Diagonal unspecified	180	32.5	112	43.1	.003
Diagonal 1	44	7.9	18	3.8	.615
Diagonal 2	22	3.9	6	2.3	.226
Marginal unspecified	223	40.3	117	45.0	.468
Obtuse marginal 1	108	19.5	61	23.5	.188
Obtuse marginal 2	78	14.1	44	16.9	.284
Posterior descending	263	47.5	155	59.6	.001
Circumflex	74	13.4	42	16.1	.282
Acute marginal	30	5.4	20	7.7	.204
Ramus intermedius	46	8.3	30	3.8	.137

CABG, coronary artery bypass graft; MIDCAB, minimally invasive direct vision coronary artery bypass; LIMA, left internal mammary artery; LAD, left anterior descending artery; SVG, saphenous vein graft; RIMA, right internal mammary artery; RCA, right coronary artery.

^aComplete data available for all AFIB subjects (n = 260) and all NAFIB subjects (n = 554) except number of vessels bypassed (n = 553).