Ultrasound Parameters for the Outcome Prediction of External Cephalic Version for Fetuses with Breech Presentation

Inclusion Criteria: * Age ≥18 y.o.; * Pregnant women with a diagnosis of fetal breech presentation eligible and desirous for ECV; * Singleton; * At term (≥ 37 weeks); * Breech presentation; * No previous uterine scars or other indications for elective C-section; * Signed written informed consent to study participation. Exclusion Criteria: * Age \<18 y.o.; * Preterm gestational age; * Multiple pregnancies; * Indications for elective cesarean section; * Incomplete obstetrical data; * Refusal to provide informed consent. * Desire to an elective C-Section * Controindications for ECV or vaginal delivery (placental abruption, placenta previa, uterine malformations) * Reduction of amniotic fluid (AFI \<4 cm) * Uterine contractions * Vaginal bleeding * Premature rupture of membranes * Nonreassuring fetal heart rate patterns before the procedure.