| Age, yrs |
63.0 (60.5−71.5)*
|
65.0 (63.0−73.0)*
|
0.051 |
| Male |
60 (78.9%) |
16 (64.0%) |
0.133 |
| Body mass index, kg/m2
|
26.0 ± 3.4 |
25.1 ± 2.6 |
0.198 |
| Hypertension |
49 (64.5%) |
16 (64.0%) |
0.966 |
| Hyperlipidemia |
11 (14.5%) |
4 (16.0%) |
1.000 |
| Diabetes mellitus |
24 (31.6%) |
9 (36.0%) |
0.683 |
| Prior myocardial infarction |
13 (17.1%) |
5 (20.0%) |
0.979 |
| Prior percutaneous coronary intervention |
9 (11.8%) |
2 (8.0%) |
0.869 |
| Stroke |
10 (13.2%) |
4 (16.0%) |
0.982 |
| Aspirin |
43 (56.6%) |
17 (68.0%) |
0.313 |
| Clopidogrel |
20 (26.3%) |
12 (48.0%) |
< 0.05 |
| Preoperative laboratory test |
|
|
|
| Hemoglobin, g/L |
133.4 ± 14.8 |
132.2 ± 14.1 |
0.707 |
| Hematocrit, % |
39.7 ± 4.4 |
38.2 ± 4.0 |
0.144 |
| Platelet count, × 109/L
|
213.2 ± 73.3 |
205.0 ± 49.8 |
0.605 |
| Alanine transaminase, U/L |
26.4 (16.2−43.4)*
|
27.0 (18.4−42.1)*
|
0.850 |
| Total bilirubin, μmol/L |
11.0 ± 3.9 |
11.6 ± 5.0 |
0.498 |
| Serum creatinine, μmol/L |
74.4 ± 18.0 |
75.0 ± 13.4 |
0.861 |
| Prothrombin time, s |
11.3 (10.9−11.9)*
|
11.4 (11.1−11.9)*
|
0.798 |
| Activated partial thromboplastin time, s |
30.0 ± 2.8 |
30.0 ± 3.4 |
0.945 |
| Fibrinogen, g/L |
3.2 (2.8−3.5)*
|
3.6 (3.0−3.8)*
|
0.105 |
| Postoperative laboratory test |
|
|
|
| Hemoglobin, g/L |
114.5 (105.0−125.0)*
|
111.0 (96.0−125.0)*
|
0.447 |
| Hematocrit, % |
34.3 ± 4.4 |
32.9 ± 5.7 |
0.178 |
| Platelet count, × 109/L
|
167.5 ± 44.3 |
150.6 ± 50.0 |
0.111 |
| Alanine transaminase, U/L |
24.3 (16.0−44.9)*
|
38.7 (96.0−125.0)*
|
0.382 |
| Total bilirubin, μmol/L |
14.7 ± 6.1 |
17.4 ± 6.1 |
0.058 |
| Serum creatinine, μmol/L |
75.5 (64.5−93.5)*
|
81.7 (74.7−91.7)*
|
0.207 |
| C-reactive protein, mg/L |
17.2 (8.4−43.9)*
|
23.2 (5.1−124.2)*
|
0.467 |
| Cardiac troponin I, ng/mL |
1.1 (0.5−1.8)*
|
1.0 (0.5−2.4)*
|
0.747 |
| Creatine kinase-MB isozyme, U/L |
27.2 ± 9.3 |
29.8 ± 10.7 |
0.245 |
| Prothrombin time, s |
12.7 (12.0−13.3)*
|
12.8 (12.0−13.9)*
|
0.447 |
| Activated partial thromboplastin time, s |
28.5 ± 3.6 |
27.7 ± 3.8 |
0.353 |
| Fibrinogen, g/L |
2.4 ± 0.5 |
2.3 ± 0.6 |
0.390 |
| N-terminal pro-B-type natriuretic peptide, pg/mL |
405.4 ± 199.5 |
398.2 ± 229.0 |
0.880 |
| Cell saver transfusion, mL |
450.0 (300.0−700.0)*
|
600.0 (350.0−1150.0)*
|
0.189 |
| Red blood cells, U |
0 |
0 |
0.355 |
| Plasma, mL |
400.0 (0.0−400.0)*
|
400.0 (50.0−575.0)*
|
0.227 |
| Postoperative chest drain loss, mL/24 h |
660.0 (610.0−950.0)*
|
1160.0 (1052.5−1420.0)*
|
< 0.05 |
