Table 4.
Blood-loss and transfusions for all patients
| Warfarin patients (n = 99) | Control group (n = 99) | P-value | |
|---|---|---|---|
| Preoperative Hb (g/dL), mean (±SD) | 12.8 (1.6) | 12.3 (1.5) | 0.03 |
| Postoperative Hb (g/dL), mean (±SD) | 10.4 (1.2) | 9.9 (1.4) | 0.06 |
| Day 2–4 Hb (g/dL), mean (±SD) | 10.7 (1.1) | 10.7 (1.0) | 0.7 |
| Calculated blood loss (ml), mean (±SD) | 1306 (960) | 1285 (588) | 0.5 |
| Patients given preoperative transfusion, n (%) | 5 (5.1) | 1 (1.0) | 0.2 |
| Patients given intraoperative transfusion, n (%) | 8 (8.1) | 12 (12) | 0.5 |
| Patients given postoperative transfusion, n (%) | 53 (54) | 70 (71) | 0.02 |
| Patients given anya transfusion, n (%) | 56 (57) | 72 (73) | 0.03 |
| Transfusions per transfused patient, mean (±SD, range) | 2.8 (2.8, 1–19) | 2.8 (1.4, 1–8) | 0.2 |
aPatients given transfusion pre- and/or intra- and/or postoperative