This study is a prospective observational study which will monitor how cesarean section in the first pregnancy will develop a cesarean scar defect. Patients with planned cesarean section in their first pregnancy and those with an emergency cesarean section will be monitored for one year.

Cesarean scar defects, which may develop after cesarean deliveries, are associated with menstrual bleeding problems, infertility, and poor obstetric outcomes. No matter how excellent and standard surgical technique is applied, scar defects may develop after cesarean section. However, when cesarean operation decision is taken, the existing operational conditions can affect the formation of cesarean scar defect in the future. Although the surgical technique is the same, a planned cesarean operation and an emergency cesarean section may differ for a future cesarean scar defect that may develop in the future.

Inclusion Criteria:

• 18-45-year-old patients
• Patients who have undergone a planned or emergency cesarean section within the 38-42th gestational week.

Exclusion Criteria:

• Spontaneous vaginal birth
• Preterm birth
• Pregnant women with an obstetrical or gynecological complication.

Pregnant women at 38-42th gestational weeks.

The study population consists of pregnant patients who are in their 38-42th gestational weeks and who undergo planned or emergency cesarean section.

Deidentified individual participant data for all primary and secondary outcomes will be made available.

Data will be available within nine months after the study completion.

Data access requests will be reviewed by an external independent review panel. Requesters will be required to sign a data access agreement form.