| Age, yrs |
64.0 (61.0−71.0)*
|
63.0 (60.5−72.5)*
|
0.204 |
| Male |
260 (75.4%) |
89 (64.5%) |
< 0.05 |
| Body mass index, kg/m2
|
25.5 ± 4.3 |
25.7 ± 3.9 |
0.625 |
| Hypertension |
226 (65.5%) |
83 (60.1%) |
0.267 |
| Hyperlipidemia |
57 (16.5%) |
26 (18.8%) |
0.542 |
| Diabetes mellitus |
108 (31.3%) |
40 (29.0%) |
0.618 |
| Prior myocardial infarction |
43 (12.5%) |
13 (9.4%) |
0.345 |
| Prior percutaneous coronary intervention |
25 (7.2%) |
9 (6.5%) |
0.779 |
| Stroke |
77 (22.3%) |
24 (17.4%) |
0.400 |
| Aspirin |
227 (65.8%) |
108 (78.3%) |
< 0.05 |
| Clopidogrel |
93 (27.0%) |
52 (37.7%) |
< 0.05 |
| Preoperative laboratory test |
|
|
|
| Hemoglobin, g/L |
132.1 ± 15.1 |
134.6 ± 14.7 |
0.103 |
| Hematocrit, % |
39.2 ± 4.4 |
38.5 ± 4.1 |
0.100 |
| Platelet count, × 109/L
|
214.9 ± 67.3 |
211.3 ± 63.9 |
0.597 |
| Alanine transaminase, U/L |
24.8 (15.4−40.5)*
|
29.6 (21.2−41.2)*
|
0.077 |
| Total bilirubin, μmol/L |
11.4 ± 4.2 |
12.2 ± 4.4 |
0.064 |
| Serum creatinine, μmol/L |
71.0 (62.0−81.0)*
|
75.0 (64.5−81.5)*
|
0.183 |
| Prothrombin time, s |
11.3 ± 1.0 |
11.3 ± 0.6 |
0.624 |
| Activated partial thromboplastin time, s |
30.1 (28.4−32.2)*
|
31.2 (28.8−33.0)*
|
< 0.05 |
| Fibrinogen, g/L |
3.4 ± 0.7 |
3.4 ± 0.6 |
0.502 |
| Postoperative laboratory test |
|
|
|
| Hemoglobin, g/L |
114.1 ± 16.1 |
114.5 ± 19.1 |
0.861 |
| Hematocrit, % |
34.2 ± 4.4 |
33.3 ± 5.2 |
0.058 |
| Platelet count, × 109/L
|
178.0 ± 48.9 |
162.1 ± 47.6 |
< 0.05 |
| Alanine transaminase, U/L |
25.1 (16.2−46.5)*
|
31.0 (21.4−43.3)*
|
0.260 |
| Total bilirubin, μmol/L |
15.2 (11.1−19.6)*
|
16.5 (12.3−22.0)*
|
< 0.05 |
| Serum creatinine, μmol/L |
77.5 ± 18.1 |
85.3 ± 20.3 |
< 0.05 |
| C-reactive protein, mg/L |
17.4 (7.0−66.0)*
|
34.3 (6.5−144.8)*
|
< 0.05 |
| Cardiac troponin I, ng/mL |
1.0 (0.5−1.8)*
|
1.2 (0.5−2.3)*
|
0.069 |
| Creatine kinase-MB isozyme, U/L |
27.0 (22.0−33.0)*
|
25.0 (21.0−31.0)*
|
0.123 |
| Prothrombin time, s |
12.6 (12.1−13.3)*
|
12.6 (12.0−13.5)*
|
0.913 |
| Activated partial thromboplastin time, s |
32.7 (29.9−36.6)*
|
32.6 (30.3−36.1)*
|
0.536 |
| Fibrinogen, g/L |
2.4 ± 0.5 |
2.2 ± 0.6 |
< 0.05 |
| N-terminal pro-B-type natriuretic peptide, pg/mL |
337.0 (128.0−826.0)*
|
304.7 (115.0−785.0)*
|
0.482 |
| Cell saver transfusion, mL |
450.0 (300.0−800.0)*
|
600.0 (410.0−1144.0)*
|
< 0.05 |
| Red blood cells, U |
0 |
0 |
0.185 |
| Plasma, mL |
400.0 (0.0−400.0)*
|
400.0 (0.0−400.0)*
|
0.302 |
| Postoperative chest drain loss, mL/24 h |
729.0 (628.0−856.0)*
|
1202.5 (1105.0−1350.0)*
|
< 0.05 |
