Table 1.
Demographic patient data
| Study group | Control group | p value | |||
|---|---|---|---|---|---|
| Sex (female/male) | 16/0 | 14/2 | 0.483 | ||
| Age (years) | 66.9 ± 9.1 | 66.2 ± 7.1 | 0.625 | ||
| BMI | 32.6 ± 4.3 | 34.3 ± 8.3 | 0.830 | ||
| Preoperative risk factors | Hypertension | 5 | Hypertension | 6 | – |
| Diabetes mellitus | 2 | Varicosity+CAD+smoking | 1 | ||
| Anaesthesia time | <2 h | 14 | <2 h | 10 | 0.220 |
| >2 h | 2 | >2 h | 6 | ||
| Anaesthesia type | General | 11 | General | 10 | 0.710 |
| Spinal+epidural | 5 | Spinal+epidural | 6 | ||
| Arthroplasty type | Unilateral | 15 | Unilateral | 13 | 0.600 |
| Bilateral | 1 | Unilateral | 3 | ||
| Hospital stay duration (days) | 21.2 ± 11.3 | 16.5 ± 6.9 | 0.163 | ||
| Autologous transfusion (ml) | 509.7 ± 186.7 | – | – | ||
| Homologous transfusion (ml) | 300.0 ± 335.6 | 685.7 ± 365.5 | 0.001* | ||
| Total drainage (ml) | 725.6 ± 309.8 | 888.5 ± 497.8 | 0.385 | ||
*The need for bank blood was significantly lower in the autotransfusion group. BMI=body mass index. CAD=coronary artery disease