ObjectivesTo comparatively analyze maternal and fetal factors and quality markers of blood samples in a public umbilical cord blood bank.MethodThis is a cross-sectional descriptive study that revisited 458 records of donations from September 2009 to March 2013 at the Hemocentro de Santa Catarina. The means of markers were used to define cutoff points for the quality of cord blood.ResultsMost donations came from women with ages between 18 and 29 years (62.8%), gestational age ≥ 40 weeks (55.2%), vaginal delivery (51.3%), primiparous (41.4%), and with male newborns (54.4%) weighing between 3000 and 3499 g (41.8%). The volume of the donations ranged from 71.6 to 275.2 mL, the total nucleated cell count ranged from 4.77 × 108 to 31.0 × 108 cells and CD34+ cells ranged from 0.05 to 1.23%. There were statistically significant differences in the volume with respect to gestation age > 38 weeks (p-value = 0.001), cesarean section (p-value < 0.001) and birth weight > 3500 g (p-value < 0.001). The total nucleated cell count was positively affected by cesarean section (p-value = 0.022) and birth weight > 3500 g (p-value < 0.001). There was no statistically significant difference between the variables and the percentage of CD34+ cells.ConclusionsDelivery route and birth weight influence the volume of cord blood and the total nucleated cell count. Gestational age influences only the volume of cord blood.

The aim of this report is to describe general and methodological characteristics of a cohort study in southern Brazil (Coorte Brasil Sul), aimed at understanding the impact of the first 1,000 days of life on children's health. It is a cohort study involving all children born in 2009 and their families living in the municipality of Palhoça, State of Santa Catarina, Brazil. Face-to-face interviews with parents at home using a structured questionnaire and children's physical and clinical examinations at schools have been carried out. Crosssectional analyzes, longitudinal comparisons and hierarquical regression analysis will allow understanding if the first 1,000 days of life can influence on 6-year-old children's health. The Coorte Brasil Sul is in its retrospective phase together with the children's physical data collection. Preliminary data (n=1270) related to nutritional status point to a high prevalence of overweight (16.4%) and obesity (15.5%). With the continuity of the study, it is expected to evaluate if the first phases of life can influence health during adolescence and in adult life, mainly in relation to chronic diseases.

Objective: To determine maternal and fetal risk factors associated with the birth of late preterm infants in comparison to those born at term. Methods: A case-control study was carried out in a tertiary center for high-risk pregnancies. For the cases, the study enrolled post-partum mothers and their respective newborns with gestational ages equal or greater than 34 weeks and less than 37 weeks. As controls, the post-partum mothers and their newborns with gestational ages of 37 weeks or greater were selected. The sample was calculated with a ratio of two controls for each case, resulting in 423 patients. Association studies were performed using the chi-square test or Fisher’s exact test and logistic regression analysis. Results: The variables associated with late prematurity were inadequate prenatal (Odds Ratio [OR] 1.23; confidence interval of 95% [95%CI] 1.12-1.34; p≤0.001), premature rupture of membranes (OR 4.98; 95%CI 2.66-9.31; p≤0.001), length of hospital stay ≥24 hours until birth (OR 0.18; 95%CI 0.06-0.52; p≤0.001), cesarean section (OR 2.74; 95%CI 1.69-4.44; p≤0.001) and small for gestational age newborn (OR 3.02; 95%CI 1.80-5.05; p≤0.001). Conclusions: Inadequate prenatal care and membranes’ premature rupture were found as factors associated with the late preterm birth. It is important to identify the factors that allow intervention with adequate prenatal care in order to reduce poor outcomes due to late prematurity.

Objetivo: O estudo objetiva conhecer os fatores associados à realização da episiotomia no parto vaginal. Metodologia: Estudo transversal envolvendo 330 partos, de janeiro/2012 a dezembro/2013. Estudou-se a associação das variáveis independentes com a realização da episiotomia por meio de cálculo de razões de prevalência e seus respectivos intervalos de confiança, com nível de significância p < 0,05. Resultados: Na amostra estudada, 224 (67,9%) pacientes não realizaram episiotomia e 106 (32,1%) realizaram o procedimento. A idade média foi de 22,9 (± 5,9) anos e a episiotomia foi mais realizada naquelas com idade inferior a 20 anos [RP 1,61 (IC 95% 1,15; 2,25)] (p = 0,005). As mulheres com mais de 8 anos completos de estudo foram significativamente mais submetidas à episiotomia que as demais [RP 2,34 (IC 95% 1,70; 3,22)] (p < 0,001). Conclusão: A realização da episiotomia nesta população ocorreu com maior prevalência nas parturientes mais jovens e com maior escolaridade.Descritores: Episiotomia; Fatores associados; Parto vaginalEVALUATION OF THE DETERMINANT FACTORS TO EPISIOTOMY IN VAGINAL DELIVERYObjective: This study aims to evaluate the factors associated with its performance in vaginal delivery. Methodology: This is a cross-sectional study carried out with 330 births, from January / 2012 to December / 2013. The association of the independente variables with episiotomy was calculated by prevalence ratios and their respective confidence intervals, with significance level p < 0.05. Results: In the studied sample, 224 (67.9%) patients did not undergo episiotomy and 106 (32.1%) had the procedure. The mean age was 22.9 ± 5.9 years and the episiotomy was more frequently performed in those younger than 20 years old [PR 1.61 (95% CI 1.15; 2.25)] (p = 0.005). Women with more than 8 years of education were significantly more likely to undergo episiotomy than the others [PR 2.34 (95% CI 1.70; 3.22)] (p < 0.001). Conclusion: The episiotomy, in this population, occured more likely in younger and more educated parturients.Descriptors: Episiotomy; Associated factors; Vaginal birthEVALUACIÓN DE LOS FACTORES DETERMINANTES A LA REALIZACIÓN DE LA EPISIOTOMÍA EN EL PARTO VAGINALObjetivo: El estudio tiene como objetivo conocer los factores asociados a la realización de la episiotomía en el parto vaginal. Metodología: Estudio transversal que involucra 330 partos, de enero/2012 a diciembre/2013, para la asociación de las variables independientes con la episiotomía por razones de prevalencia y sus respectivos intervalos de confianza, con p <0,05. Resultados: En la muestra, 224 (67,9%) pacientes no realizaron episiotomía y 106 (32,1%) realizaron el procedimiento. La edad media fue de 22,9 (± 5,9) años y la episiotomía fue más realizada en aquellas con edad inferior a 20 años [RP 1,61 (IC 95% 1,15, 2,25)] (p = 0,005) ). Las mujeres con más de 8 años completos de estudio fueron significativamente más sometidas a la episiotomía que las demás [RP 2,34 (IC 95% 1,70; 3,22)] (p <0,001). Conclusión: La realización de la episiotomía ocurrió con mayor prevalencia en las parturientas más jóvenes y con mayor escolaridad.Descriptores: Episiotomía; Factores asociados; Parto vaginal

SUMMARY OBJECTIVE: To analyze the temporal trend and factors associated with adolescent pregnancy during ten years in Brasil. METHODS: Data were extracted from the Live Births Information System, of the Brazilian Health System and included information regarding live births from adolescent mothers from 2006 to 2015. The overall proportion of gestation in adolescence and the specific proportions according to the characteristics analyzed were calculated using the standardized reporting coefficients and the simple linear regression method. The study was approved by the ethics committee of the University of Southern Santa Catarina (UNISUL). RESULTS: The general proportion of Live Births from adolescent mothers varied from 21.4% in 2006 to 18.1% in 2015. This reduction occurred because of the negative variation observed among mothers aged 15 to 19 years. The indigenous group was the only that did not present a reduction. There was an increase in the proportion of adolescents with between four and seven years of formal education and in the proportion of adolescents living with partners. There was a reduction in all Brazilian Regions and in large part of the Federation Units. CONCLUSION: The analysis of the temporal trend identifies a reduction in the proportion of live births among adolescent mothers in Brasil. However, there is a growing trend among some specific groups.