|
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%)
|
