Perineal Tear, Perineum; Rupture, Perineum; Tear
Conditions
Keywords
perineal tear, hyperelasticity
Brief summary
The objective of this work is to evaluate perineal elasticity and deformation and the perineal stresses induced by the fetus during delivery.
Detailed description
The objective of this work is to evaluate perineal elasticity and deformation and the perineal stresses induced by the fetus during delivery.
Interventions
OTHERassessment in the 8th month of pregnancy and during delivery
* Day 0: presentation of the study * During pregnancy between Day 0 and 36-38SA: inclusion * During pregnancy: collection of pelvic MRI data if performed during pregnancy for maternal or fetal reasons * Between 36 and 38 WG: collection of demographic, obstetrical, fetal ultrasound and clinical data / Perineal elastographic recording / Recording of the perineal deformation by stereovision camera * In the delivery room, at the beginning of labor and before pushing: collection of clinical data / Collection of obstetrical ultrasound data / Perineal elastographic recordings / Recording of the perineal deformation by stereovision camera * In the delivery room, during expulsion : recording of the perineal deformation by stereovision camera * In the delivery room, after childbirth: collection of obstetrical, clinical and neonatal data / Perineal elastographic recordings / Cephalic and shoulder measurements of the newborn with a tape measure
Sponsors
Centre Hospitalier Universitaire de Besancon
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Masking description
The study design includes a consultation during pregnancy between 36 and 38 weeks of gestation and an assessment in the delivery room during childbirth
Intervention model description
prospective, longitudinal and single-center study
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* Pregnant and volunteer women \>18 years old * Primiparous * With a singleton pregnancy * No objection from the subject and the spouse to participate in the study
Exclusion criteria
* History of prior delivery or c-section * History of perineal troubles * BMI \> à 35 mg/m² * History of chronic muscular disease or connective tissue pathology * Psychiatric pathology requiring hospitalization * Patients who do not understand the French language * Legal incapacity or limited legal capacity * Patients unlikely to cooperate
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| maximum value of equivalent deformation obtained by stereovision camera | delivery | maximum value of equivalent deformation obtained by stereovision camera |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Correlation between perineal deformation values and perineal tears | delivery | Correlation between perineal deformation values and perineal tears |
| Correlation between perineal deformation values and fetal parameters | pregnancy | Correlation between perineal deformation values and fetal parameters |
| Correlation between fetal ultrasound and neonatal parameters and perineal tears | delivery | Correlation between fetal ultrasound and neonatal parameters and perineal tears |
| Delta between the minimum and maximum width of GH, and between the maximum and minimum length of PB | pregnancy | Delta between the minimum and maximum width of GH, and between the maximum and minimum length of PB |
| Correlation between elasticity of the perineal body and perineal tears | pregnancy | Correlation between elasticity of the perineal body and perineal tears |
| Correlation between the elasticity of the external anal sphincter and perineal tears | pregnancy | Correlation between the elasticity of the external anal sphincter and perineal tears |
| Evolution of the elasticity of the perineal body and the SAE during delivery | delivery | Evolution of the elasticity of the perineal body and the SAE during delivery |
Outcome results
None listed