Table 3.
Intraoperative blood conservation data
| Group C | Range | Group I | Range | Difference (%) | P | |
|---|---|---|---|---|---|---|
| Fromme’s field visibility score (0-5) | ||||||
| Subcutaneous dissection | 2.2±0.6* | 1-3 | 0.3±0.5 | 0-1 | 86 | 0.003 |
| Muscle dissection | 3.5±0.6* | 2-4 | 1.4±0.6 | 1-3 | 58 | 0.011 |
| Screws fixation | 3.6±0.6* | 2-5 | 3.0±0.6 | 2-4 | 17 | 0.012 |
| Osteotomy | 3.7±0.7* | 3-5 | 3.1±0.6 | 2-4 | 16 | 0.042 |
| Estimated blood loss (ml) | 1346±691* | 700-4200 | 830±461 | 300-2000 | 38 | 0.005 |
| Blood transfusion (unit) | 2.8±1.4* | 1-8 | 1.8±1.1 | 0-4 | 36 | 0.010 |
| Fluid transfusion (l) | 3.8±1.2* | 2.5-7 | 2.9±4.3 | 2-3.5 | 23 | 0.003 |
| Urine output (ml) | 762±471 | 300-2000 | 772±334 | 300-1500 | - | 0.938 |
*Significant difference between the two groups P≤0.05. Data in mean±SD, Range=Minimum-maximum, Difference=The percent difference between the means of two groups. SD=Standard deviation