In 2019, there were 42.422 deliveries in Distrito Federal, of those that 45,45% were vaginally, and 54,52% were caesarean sections according to Live Birth Information System. Considering the presented data, studies reaffirm the high rate of caesarean sections. Public measures were adopted to follow the global recommendations, that from all the births less than 15% should be caesarean sections. The Rede Cegonha include actions to ensure the quality, security and humanization of the service available to the women, since the pregnancy to the first two years of the child's life. Therefore, this study presents the relevance of the monitoration from the ways of birth and the impacts from each one.

Analyze the most prevalent vaginal birth parturients profile from a hospital in Brasília in the first semester of 2019.

This study consist in a descriptive cross-sectional study, wich analyze medical records from a hospital in Brasília, in 2019 from January to June. The excluded criteria were twin pregnancy and illegible letters, and the included criteria were: vaginal birth. The analysis consists in sections, the describe the sociodemographic, parturient clinical profile, and newborn data.

Among the study's eligibility criteria, 437 medical records were selected. For characterization of the sociodemographic profile, it was observed that 51,72% comprises the age group between 20 and 29 years, 66,13% had brown-skinned, 42,33% were single, 38,44% lived in Águas Lindas, 56,75% completed high school. Concerning the clinical data, 59,27% were multiparous women, 25,63% completed 39 weeks pregnant, 54,23% weren't induced, 51,59% didn't use anesthesia, 55,15% of the births were in lithotomy position, 29,06% had second-degree laceration, 91,76% didn't have an episiotomy, and 94,05% had a companion. Regarding the newborn's data, the mean weight was 3,15kg, the mean length was 48,4cm, the mean head circumference was 33,8cm and the mean of the first APGAR was 8,1.

With the presented data, it's possible to conclude that the vaginal birth's parturients' characterization it's variable in the majority of the analyzed factors and even though it was observed good obstetric practices, such as the presence of a companion and a few cases of episiotomy, it's still necessary the implementation of methods that reduce the risk of perineal injury, and comprehend the reason that most of the births are realized in lithotomy position, that biomechanically aren't favorable to the birth.

Many resources can be used to reduce the risk of perineal injury, and much of them are studied by obsthetric physical therapy. Therefore, it's necessary to encourage the education of the benefits that other positions, besides the lithotomy, can bring in the moment of the birth.