Clinical and obstetric data of interest from the clinical database of the Hospital das Clinicas, Federal University of
Minas Gerais, SISMater (Information System on Maternal and Neonatal Health) were reviewed.
The database aims to automatically calculate quality indicators of obstetric and neonatal care [12].
Maternal characteristics, birth complications,and interventions were selected for analysis.
Parity, multiplebirths, and gestational age as recorded in the medical record were used.
In the absence of prenatal care, gestational age was obtained from prenatal documentation that was estimated at birth. BDelivery^ was defined as gestational age ≥22 weeks or birth weight ≥500 g.
Interventions such as analgesia with delivery,use of oxytocin in the first and second stages of labor,episiotomy, and forceps use were taken into account independently of specific procedural factors, such as the dose used orthe possible technical modalities.
The woman’s position during labor and complications such as shoulder dystocia were obtained from clinical medical records.
The duration of the active phase was calculated by subtracting the time of birth
from the initial registration time in the partograph