Table 2 Characteristics of patients and newborns
Variables | ||
|---|---|---|
Age. median (standard deviation) | 29.2 | (± 5.3) |
BMI. median (standard deviation) | 22.3 | (± 4.5) |
Primiparity. n (%) | 995 | (79.4%) |
Scarred uterus. n (%) | 136 | (10.8%) |
Analgesia. n (%) | 1243 | (99.2%) |
Indication of instrumental delivery: | ||
Abnormal fetal heart. n (%) | 758 | (60.5%) |
Arrest of fetal descent. n (%) | 489 | (39.0%) |
Contraindications to expulsive efforts. n (%) | 6 | (5.8%) |
Induced labor. n (%) | 350 | (27.9%) |
Progression of the fetus at the time of the first instrument used: | ||
Pelvic inlet. n (%) | 158 | (12.6%) |
Midpelvis. n (%) | 1022 | (81.6%) |
Pelvic outlet. n (%) | 73 | (0.06%) |
Operative delivery in the occipito-sacral position. n (%) | 84 | (6.7%) |
Intact perineum. n (%) | 10 | (0.8%) |
Perineal tears: | ||
1st degree. n (%) | 80 | (6.4%) |
2nd degree. n (%) | 82 | (6.5%) |
3rd degree. n (%) | 70 | (5.6%) |
4th degree. n (%) | 12 | (1.0%) |
Episiotomy. n (%) | 1128 | (90.0%) |
Episiotomy without any other associated lesion. n (%) | 999 | (79.7%) |
Blood loss over 500 mL. (%) | 74 | (6.3%) |
Newborn’s weight in grams. Mean (standard deviation) | 3277 | (± 439) |
Newborn’s weight ≥ 4000 g. n (%) | 54 | (4.3%) |
Cranial perimeter (cm). median (standard deviation) | 35 | (± 1.2) |
Gestational age at delivery in weeks of gestation. Median (standard deviation) | 40 | (± 1.4) |
Premature births before 37 weeks of gestation. n (%) | 53 | (4.2%) |