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1.
Acta Obstet Gynecol Scand ; 94(10): 1136-44, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26230291

RESUMO

INTRODUCTION: The aim of this study was to analyze how the progression of cervical dilatation in active labor can be predicted by digital assessment in low-risk pregnant women, in spontaneous labor at term. MATERIAL AND METHODS: This prospective observational study was performed on 328 women with singleton term gestations experiencing midwife-led labor according to local protocols, progressing to full dilatation and spontaneous delivery without any medical intervention. Mixed nonlinear models were adopted to (i) model individual cervical data into centile curves and (ii) calculate the time needed to gain 1 cm in cervical dilatation (TNG1cm ) modeled as a function of current dilatation. We correlated the first and the last TNG1cm on parturients with at least four cervical data points. RESULTS: TNG1cm showed large variations, both before and after 6 cm. This variability of natural progression of cervical curves described by the 10th and 90th centiles exceeded the differences observed in published curves from cohorts homogeneous for parity, weight and ethnicity. There was no significant correlation between the first and the last TNG1cm . Neonatal base excess was not significantly different in women with TNG1cm <10th centile and >90th centile. CONCLUSIONS: The rate of cervical dilatation, traced by parsimonious nonlinear mixed models, is largely unpredictable in the case of spontaneous naturally progressing labor, even when possible larger individual variability is excluded by prudent clinical rules. Future research in labor and delivery should be focused on the diagnosis of the causes that lie behind apparently erratic cervical changes.


Assuntos
Colo do Útero/fisiologia , Trabalho de Parto/fisiologia , Adulto , Maturidade Cervical/fisiologia , Dilatação , Feminino , Humanos , Primeira Fase do Trabalho de Parto/fisiologia , Modelos Lineares , Gravidez , Estudos Prospectivos
2.
J Matern Fetal Neonatal Med ; 28(13): 1530-6, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25190281

RESUMO

OBJECTIVE: To analyze maternal and neonatal outcomes of midwife-led labor in low-risk women at term. METHODS: Prospective observational cohort of 1788 singleton low-risk pregnancies in spontaneous term labor, managed according to a specific midwife-led labor protocol. Primary outcomes were mode of delivery, episiotomy, 3rd-4th degree lacerations, post-partum hemorrhage (PPH), need for blood transfusions, pH and Apgar score and NICU admissions. RESULTS: A total 1754 low-risk women (50.3% of all deliveries) were included in the analysis. Epidural analgesia was performed in 29.8% of cases. The rate of cesarean section was 3.7%. Episiotomy was performed in 17.6% of women. PPH > 1000 ml occurred in 1.7% of cases. 3.2% and 0.3% of the cases had an Apgar score <7 and pH < 7.10, respectively, while 0.3% of the newborns were admitted to NICU. Consultant-led labor was required for emerging risk factors during 1st and 2nd stage of labor in 16.1 and 8.6% of cases, respectively. Although maternal outcome were worse in women with emerging risk factors in labor, while neonatal outcomes were not affected by the presence these complications. CONCLUSIONS: In hospital settings, midwife-led labor in low-risk women might unfold its major advantages without additional risks of medicalization for the mother and the neonate.


Assuntos
Trabalho de Parto , Tocologia/estatística & dados numéricos , Complicações do Trabalho de Parto/epidemiologia , Resultado da Gravidez/epidemiologia , Encaminhamento e Consulta/estatística & dados numéricos , Adulto , Analgesia Obstétrica/estatística & dados numéricos , Cesárea/estatística & dados numéricos , Episiotomia/estatística & dados numéricos , Feminino , Maternidades/estatística & dados numéricos , Humanos , Recém-Nascido , Complicações do Trabalho de Parto/terapia , Hemorragia Pós-Parto/epidemiologia , Gravidez , Fatores de Risco , Centros de Atenção Terciária/estatística & dados numéricos
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