Table 4.
Comparison of ultrasonic indexes and preoperative examination indexes between the blood transfusion group and nontransfusion group .
| Group | Blood transfusion group (n = 154) | Nontransfusion group (n = 446) | t/χ2 | P |
|---|---|---|---|---|
| Ultrasonic index | ||||
| Fetal umbilical cord around neck | 23 (14.93) | 67 (15.02) | 0.000 | 0.979 |
| Thickness of the lower segment of the anterior wall of the uterus(mm) | 1.32 ± 0.53 | 1.68 ± 0.64 | 6.257 | ≤0.001 |
| Amniotic fluid index(mm) | 120.96 ± 38.92 | 116.94 ± 34.32 | 1.209 | 0.226 |
| Placenta previa | 120 (7.92) | 10 (2.24) | 386.302 | ≤0.001 |
| Preoperative fetal heart rate | 142.93 ± 6.67 | 143.82 ± 6.53 | 1.450 | 0.147 |
| Preoperative test index | ||||
| Hb (g·dL−1) | 10.01 ± 1.45 | 11.98 ± 1.45 | 14.536 | ≤0.001 |
| PLT (109·L−1) | 186.83 ± 53.32 | 175.81 ± 44.67 | 2.506 | 0.012 |
| PT (s) | 9.38 ± 0.77 | 10.53 ± 0.67 | 17.654 | ≤0.001 |
| FIB (g·L−1) | 4.16 ± 0.65 | 4.85 ± 0.86 | 9.097 | ≤0.001 |
| APTT (s) | 28.91 ± 2.42 | 26.83 ± 1.33 | 13.264 | ≤0.001 |
| TT (s) | 17.02 ± 0.45 | 17.92 ± 0.32 | 26.913 | ≤0.001 |