Table 1.
Demographics and Operative Statistics by Transfusion Status
| Variables | No transfusion (N=368) | Transfusion (N=144) | p valuea |
|---|---|---|---|
| Demographics | |||
| Age (years) | 59.5 ± 15.4 | 62.0 ± 15.8 | 0.10 |
| Male | 226 (61.4%) | 99/140 (70.7%) | 0.05 |
| Race | |||
| White | 261 (70.9%) | 106/140 (75.7%) | |
| Black | 64 (17.4%) | 20/140 (14.3%) | |
| Other | 43 (11.7%) | 14/140 (10.0%) | 0.56 |
| BMI | 29.5 ± 7.8 | 29.3 ± 8.7 | 0.84 |
| Diabetes | 108 (29.4%) | 46/140 (32.9%) | 0.44 |
| Hypertension | 240 (65.2%) | 98/140 (70.0%) | 0.31 |
| Dyslipidemia | 223 (60.6%) | 91/140 (65.0%) | 0.36 |
| Cerebrovascular Disease | 31 (8.4%) | 14/140 (10.0%) | 0.58 |
| Pre-op Creatinine | 0.9 (0.8-1.1) | 1.0 (0.8-1.3) | 0.02 |
| Pre-op Dialysis | 7 (1.9%) | 7/140 (5.0%) | 0.07 |
| Pre-op EF | 50.4 ± 14.7 | 47.7 ± 15.5 | 0.08 |
| Anticoagulated | 253 (68.8%) | 105 (72.9%) | 0.36 |
| STS Risk Score | 0.012 (0.006-0.022) | 0.023 (0.008-0.050) | <0.01 |
| Operative Statistics | |||
| Procedure | |||
| Isolated CABG | 116/351 (33.1%) | 45/131 (34.4%) | |
| Valve | 76/351 (21.7%) | 24/131 (18.3%) | |
| CABG + Valve | 28/351 (8.0%) | 14/131 (10.7%) | |
| Other | 131/351 (37.3%) | 48/131 (36.6%) | 0.71 |
| Bypass time (min) | 107.3 ± 46.6 | 119.8 ± 56.9 | 0.02 |
| Cross-clamp time (min) | 69.6 ± 30.9 | 73.4 ± 36.2 | 0.28 |
| Circulatory Arrest time | 35 (13-38) | 23.5 (4-41) | 0.80 |
| Intra-op transfusions | 2 (1-3) | 2 (1-4) | 0.02 |
BMI=Body Mass Index, CABG=Coronary Artery Bypass Graft, EF=Ejection Fraction, N=Number of Patients