Table 1.
Maternal and pregnancy characteristics of the study groups
| Characteristics | Clamp group (n = 22) |
Control group (n = 25) |
P value |
|---|---|---|---|
| Age (year), mean (SD) | 31.0±3.62 | 30.9±3.65 | .907 |
| BMI (kg/m2),mean (SD) | 22.5±1.66 | 22.2±1.85 | .600 |
| Gravidity, n (%) | .949 | ||
| ≤2 | 13 (59.1%) | 15 (60%) | |
| ≥3 | 9 (40.9%) | 10 (40%) | |
| Parity, n (%) | .753 | ||
| <2 | 14 (63.6%) | 17 (68%) | |
| ≥2 | 8 (36.4%) | 8 (32%) | |
| Pregnancy, n (%) | .553 | ||
| Single | 18 (81.8%) | 22 (88%) | |
| Twins | 4 (18.2%) | 3 (12%) | |
| Delivery method, n (%) | .706 | ||
| Cesarean delivery | 10 (45.5%) | 10 (40%) | |
| Vaginal delivery | 12 (54.5%) | 15 (60%) | |
| Scarred uterus, n (%) | 8 (36.4%) | 6 (24%) | .355 |
| ART n (%) | 7 (31.8%) | 5 (20%) | .354 |
| PROM n (%) | 7 (31.8%) | 8 (32%) | .989 |
| ICP n (%) | 2 (9.1%) | 3 (12%) | .746 |
| Uterotonic contraindications, n (%) | 12 (54.5%) | 10 (40%) | .319 |
| Abnormal placenta, n (%) | .749 | ||
| Placental adhesion | 6 (27.3%) | 8 (32%) | |
| Low placenta | 2 (9.1%) | 1 (4%) | |
| Placenta previa | 2 (9.1%) | 2 (8%) | |
| Surgical measures in groups, n (%) | |||
| Repair of lower uterus | 6 (27.3%) | 6 (24%) | .651 |
| Uterine binding | 6 (27.3%) | 7 (28%) | .956 |
| Uterine cavity packing | 8 (37.4%) | 3 (12%) | .105 |
| Uterine suture | 1 (4.5%) | 6 (24%) | .049a |
| Ligation of uterine artery | 0 | 3 (12%) | .046a |
| Newborn weight (g), mean (SD) | 2832±1067 | 3060±1039 | .706 |
Abbreviations: BMI Body mass index, ART Assisted reproductive technology, PROM Premature rupture of membranes, ICP Intrahepatic cholestasis of pregnancy, SD Standard deviation, CS Caesarean section; Uterotonic contraindications such as Gestational hypertension, Preeclampsia, Heart disease, Glaucoma, Bronchial asthma etc. a Denotes significant values if p < 0.05