This study is to review how the uterus heals after having open fetal surgery. Open fetal surgery causes a scar perhaps two: one from the open fetal surgery and a second from delivery by cesarean section; rarely, the same area of your uterus was used for both open fetal surgery and delivery. From other studies of surgery performed on a uterus, some of the uterine scars do not heal well. This study's intervention uses sterile saline to spread open the inside of the uterus. The saline is slowly injected into the uterus using a catheter. An ultrasound called a sonohysterogram is performed to take pictures of the uterus, its inside and the walls of the uterus. In this way, the healed areas from the uterine surgery can be seen with ultrasound and evaluated. This is performed at least 6 months after delivery. Primary Outcome: Measure the depth of the scar and location of the scar 6 months or longer after delivery.
This is an Investigator initiated, prospective study reviewing medical records and performing a sonohysterogram on non-pregnant women at 6 or more months after delivery of an infant who received open fetal repair. An evaluation is completed at SSM Cardinal Glennon (CG), Fetal Care Institute (FCI) of a woman who has decided to have open fetal surgery to complete a fetal repair before the infant is born. * After open fetal surgery participant will be monitored and delivered appropriately. * After the infant is born investigators will review the mother's and infant's electronic health records and FCI database records * 6 months or more after delivery of an infant who has received open fetal repair the participant will go to Saint Louis University (SLU) Care for a sonohysterogram to evaluate the healing process.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
35
The sonohysterogram can measure the size and depth of the uterine scar allowing better predictive values for future pregnancies.
SSM Cardinal Glennon Fetal Care Institute
St Louis, Missouri, United States
Cesarean Hysterotomy Myometrial Thickness
Average myometrium thickness surrounding niche is measured by measuring Average thickness of the myometrium toward the cervix and toward the fundus resulting in the average myometrium thickness surrounding the niche, measured by the sonohysterogram.
Time frame: Minimum of 6 months after delivery.
Cesarean Hysterotomy Site Myometrial Percentage of Thinning at the Niche
Average myometrium will be calculated, measured by the sonohysterogram. The myometrium will be measured caudad and cephalad of the niche and averaged ((Caudad side in mm + Cephalad side in mm)/2)=Average myometrium thickness The myometrium at niche will be measured (niche mm). Average myometrium-niche mm= niche thinning (mm). Niche thinning / Average myometrium thickness= Percentage of thinning at the niche. Ex: Average thickness at niche: 0.5 mm Caudad myometrium thickness: 1.5 mm Cephalad myometrium thickness: 1.5 mm 1.5mm + 1.5mm= 3mm/ 2= 1.5mm (average Myometrium Thickness) 1.5mm- 0.5mm = 1.0 mm (Niche thinning) 0.5mm / 1.0 mm (% of thinning at the niche)
Time frame: Minimum of 6 months after delivery.
Fetal Myelomeningocele Hysterotomy Site Myometrial Thickness
Average myometrium thickness surrounding niche is measured by measuring average thickness of the myometrium to the right and left of the niche resulting in the average myometrium thickness surrounding the niche. This is measured by the sonohysterogram.
Time frame: Minimum of 6 months after delivery.
Fetal Myelomeningocele Hysterotomy Site Myometrial Percentage of Thinning at the Niche
Average myometrium will be calculated, measured by the sonohysterogram. The myometrium will be measure to the right and left of the niche and averaged ((Right side in mm + Left side in mm)/2)=Average myometrium thickness The myometrium at niche will be measured (niche mm). Average myometrium-niche mm= niche thinning (mm). Niche thinning / Average myometrium thickness= Percentage of thinning at the niche. Ex: Average thickness at niche: 0.5 mm Right sided myometrium thickness: 1.5 mm Left sided myometrium thickness: 1.5 mm 1.5mm + 1.5mm= 3mm/ 2= 1.5mm (average Myometrium Thickness) 1.5mm- 0.5mm = 1.0 mm (Niche thinning) 0.5mm / 1.0 mm (% of thinning at the niche)
Time frame: Minimum of 6 months after delivery.
Percent of Participants With/Without Dehiscence (>80% Thinning of the Myometrium) at the Niche
Yes \>80% of thinning of the myometrium at the niche or No \< 80% of thinning of the myometrium at the niche of the hysterotomy measured by the sonohysterogram.
Time frame: Minimum of 6 months after delivery.
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