Aims:
Primary aim is to investigate outcomes of eutocic labor, evaluating intrapartum ultrasound parameters by AIDA method: Angle of progression (AoP), Asynclitism degree (AD), fetal head-symphysis distance (HSD), and midline angle (MLA).
Secondary aim is to investigate outcomes of dystocic labor, evaluating intrapartum ultrasound parameters by AIDA method: Angle of progression (AoP), Asynclitism degree (AD), fetal head-symphysis distance (HSD), and midline angle (MLA).
Tertiary aim is to investigate of neonatal outcomes of eutocic labor: Apgar scores at 1 min, Apgar scores at 5 min.
Quaternary aim is to investigate of neonatal outcomes of dystocic labor: Apgar scores at 1 min, Apgar scores at 5 min.
pregnants in labor, at first pregnancy
gestational age ≥37 weeks of gestation
Patients who are candidates for cesarean section.
Patients in premature labor.
Patients who do not agree to participate in the study.
Exclusion criteria encompassed: breech, transverse, or oblique presentations; twin pregnancies; abnormal placental implantation; HELLP syndrome; coagulation disorders; uterine hyperstimulation (often referred to as "terrified uterus"); non-reassuring fetal heart rate; thick meconium; and cephalopelvic disproportion