|
N = 607 |
N = 604 |
|
Age, years |
66.00 (59.00-74.00) |
66.00 (59.00-74.00) |
0.588 |
Body mass index, kg/m2
|
29.51 (25.81-33.59) |
29.40
(25.79-33.21) |
0.683 |
Body surface area, m2
|
2.04 ± 0.26 |
2.05 ± 0.28 |
0.693 |
Female |
185 (30.48%) |
158 (26.16%) |
0.095 |
Race |
|
|
|
White |
559 (92.09%) |
550 (91.06%) |
0.258 |
Black |
32 (5.27%) |
28 (4.64%) |
|
Other |
16 (2.64%) |
26 (4.30%) |
|
Diabetes mellitus |
287 (47.28%) |
303 (50.17%) |
0.315 |
Dialysis dependency |
15 (2.47%) |
22 (3.64%) |
0.236 |
Chronic obstructive pulmonary disease |
131 (21.58%) |
125 (20.70%) |
0.706 |
Hypertension |
529 (87.15%) |
516 (85.43%) |
0.384 |
Immunosuppression |
35 (5.77%) |
25 (4.14%) |
0.192 |
Family history of coronary artery disease |
151 (24.88%) |
161
(26.66%) |
0.479 |
Cerebrovascular disease |
152 (25.04%) |
122 (20.20%) |
0.044 |
Peripheral vascular disease |
114 (18.78%) |
107 (17.72%) |
0.631 |
Myocardial infarction timing |
|
|
|
Not specified |
8 (1.32%) |
9 (1.49%) |
0.673 |
Less than 6 hours |
6 (0.99%) |
5 (0.83%) |
|
6 to 25 hours |
38 (6.26%) |
31 (5.13%) |
|
24 hours to 7 days |
542 (89.29%) |
539 (89.24%) |
|
Greater than 7 days |
13 (2.14%) |
20 (3.31%) |
|
Previous myocardial infarction |
607 (100.0%) |
604 (100.0%) |
0.631 |
Congestive heart failure |
120 (19.77%) |
153 (25.33%) |
0.021 |
NYHA class symptoms |
|
|
|
I |
491 (80.89%) |
457 (75.66%) |
0.043 |
II |
18 (2.97%) |
15 (2.48%) |
|
II |
50 (8.24%) |
56 (9.27%) |
|
IV |
48 (7.91%) |
76 (12.58%) |
|
Prior cardiac arrhythmia |
101 (16.64%) |
102 (16.89%) |
0.908 |
Number of diseased coronary vessels |
|
|
|
1 |
16 (2.64%) |
12 (1.99%) |
0.317 |
2 |
129 (21.25%) |
111 (18.38%) |
|
3 |
462 (76.11%) |
481 (79.64%) |
|
Antiplatelet within 5 days of surgery |
573 (94.40%) |
579 (95.86%) |
0.237 |
Anticoagulation within 5 days of surgery |
493 (81.22%) |
536 (88.74%) |
<0.001 |
Intravenous inotropes |
13 (2.14%) |
22 (3.64%) |
0.119 |
Cardiopulmonary bypass utilization |
429 (70.68%) |
502 (83.11%) |
0.000 |
Perfusion time, min |
98.00 (79.00-117.0) |
99.00 (79.00-121.0) |
0.440 |
Cross-clamp time, min |
68.00 (53.00-87.00) |
68.50 (53.00-88.00) |
0.627 |
Preoperative intra-aortic balloon pump |
53 (8.73%) |
96 (15.89%) |
0.000 |
Bilateral IMA harvest |
90 (14.83%) |
67 (11.09%) |
0.053 |
Serum creatinine, mg/dL |
0.94 (0.80- 1.13) |
1.00 (0.80- 1.20) |
0.132 |
Total albumin, g/dL |
3.40 (3.20- 3.80) |
3.40 (3.10- 3.70) |
<0.001 |
Total bilirubin, mg/dL |
0.60 (0.40- 0.70) |
0.60 (0.40- 0.80) |
0.042 |
Left ventricular EF, % |
53.00 (40.00-58.00) |
46.50 (35.00-55.00) |
<0.001 |
Operative status |
|
|
|
Elective |
1 (0.16%) |
5 (0.83%) |
0.245 |
Urgent |
572 (94.23%) |
568 (94.04%) |
|
Emergent |
34 (5.60%) |
31 (5.13%) |
|
STS predicted risk of mortality, % |
1.52 (0.77- 3.43) |
1.75 (0.83-
3.88) |
0.129 |
Time from peak troponin to surgery, days |
2.48 (1.28- 4.00) |
2.56
(1.09- 4.03) |
0.668 |