Active clinical trials for "Obstetric Labor, Premature"

The aim of the pilot trial is to assess at what extend women with arrested threatened preterm labor change their activity patterns at home in response to bed rest prescription. An area of concern for the design of a trial is the strength of health provider's recommendation to change women's behaviors, and their compliance with bed rest recommendations. The study was a randomized parallel design. The intervention group consisted of total bed rest for four days (with allowance to go to the toilet). The control group consisted in the restriction of activities during four days.

To evaluate the value of vaginal progesterone therapy for reduction of preterm labor in asymptomatic twin pregnancies who have sonographic short cervix

The threat of preterm labour (PTL) is the first cause of hospitalization in the course of pregnancy. Its diagnostic is based on clinical examination with a positive predictive value of about 40 %. The role of the Monocyte chemotactic protein-1 (MCP-1) in delivery has been suggested by its secretion in the amniotic fluid during labour and by the increase in the expression of its RNA messengers in the peripheral maternal blood. We have also shown that the proportion of MCP-1-expressing monocytes is higher in women with vaginal delivery compared with those with caesarean delivery prior the onset of labour. OBJECTIVES : Primary To seek link between the respective proportions of circulating maternal monocyte and lymphocyte subpopulations and the true onset of PTL characterised by delivery occurring within 7 days post admission. Secondary: to (1) compare the predictive values of these new markers with those currently used, e.g. quantification of fœtal fibronectin and assessment of cervical length and effacement, (2) Compare the respective proportions of monocytes and lymphocyte subpopulations in maternal blood and fœtal membranes, (3) determine if a correlation exists between the activation markers expressed by maternal monocyte and lymphocyte subpopulations and the neonatal outcomes of preterm infants. MATERIAL AND METHODS: 200 patients with a singleton pregnancy between 24 and 34 weeks of amenorrhea and complicated PTL, will be prospectively included in the maternity wards of Galway (Ireland) and of Dijon with the support of the perinatal network of Burgundy. A 2X5ml blood sample will be collected upon admission, at D1, D2, D4 and D6 for women who did not deliver within the first 7 days; finally, another blood sample will be drawn upon discharge. After delivery, foetal membranes will be collected to characterize and compare the various monocyte and lymphocyte subpopulations in the maternal blood. The characterization and the study of the level of activation of blood and foetal membrane cells will be performed using flow cytometry technique with suitable markers. The main judgment criteria will be the percentage of monocytes positively expressing MCP-1 for all three monocyte subpopulations ("inflammatory", "residents or patrollers" and "intermediates", according to CD14, CD16, CCR2 and MCP-1 markers. Lymphocyte subpopulations will be assessed using the following markers: CD45, CD3, CD4, CD8 (T lymphocytes), HLA-DR (activated T lymphocytes), CD19 (B lymphocytes), CD16/CD56 (NK Cells), intracellular IFN-gamma (Th1 lymphocytes), intracellular IL-4 (Th-2 lymphocytes), intracellular IL-17 and CCR6 (Th17 lymphocytes), CD4, CD25, Foxp3 and CD127 (Tregs). Univariate statistical analysis of quantitative data will be performed using the Mann and Witney test or ANOVA, after verification of the conditions of application. The comparisons of percentages will be done using Chi-square Pearson tests and the Fisher's exact test, as appropriate. The multivariate analysis will be performed using a stepwise descending analysis. TRANSLATIONAL DIMENSION: The characterization of the various monocyte and lymphocyte subpopulations in the maternal blood and in the foetal membranes might constitute an " immunological signature " of the labour and therefore validate the relevance of a predictive marker for clinicians. EXPECTED RESULTS AND PERSPECTIVES: The study of the various monocyte and lymphocyte subpopulations in the maternal blood will allow to better characterise the immunological mechanisms occurring at the start of premature labour and to identity predictive markers of the preterm delivery, to validate prospectively in order to optimize the management of PTL

Although the Cesarean section is one of the most common obstetric operations around the world, the World Health Organization recognizes that where cesarean rates are higher than 10%, there is no increase in beneficial maternal and newborn outcomes. some researchers noted that in countries where cesarean rates are above 15%, populations experience higher maternal, infant, and neonatal mortality rates. infants born by cesarean delivery are more likely to require neonatal intensive care unit and have greater respiratory complications, and higher odds for childhood asthma, and obesity. Preterm is defined as babies born alive before completing 37 weeks of pregnancy. Preventing Preterm birth is a global priority due to increased risk for neonatal morbidity and mortality.

To evaluate the performance of uterocervical angle (UCA) in the prediction of labor timing in patients with preterm premature rupture of the membranes

A randomized controlled trial (RCT) of nitric-oxide donor (NOD) isosorbide mononitrate (IMN) versus placebo as an adjuvant to misoprostol/ intra-cervical Foley bulb for induction of labor to decrease rate of cesarean deliveries in pregnancies complicated by preeclampsia (≥24/0 weeks' gestation)

Use of modern diagnostic tools e.g. fetal fibronectin and ultrasound measurement of cervical length to diagnose preterm labor can result in improved outcomes compared to traditional diagnosis based on digital examination to measure cervical change.

To evaluate the performance of uterocervical angle (UCA) in the prediction of preterm labor in isolated polyhydramnios

The objective of the study was to evaluated the feasibility and reproducibility of the measurement of lung elasticity report / fetal liver according to gestational age in a group of patients with a normal course of pregnancy and in a group of Patients at risk of preterm delivery.

Introduction: Preterm labor (PTL) is an important obstetric intercurrence that affects 5 to 10% of pregnancies. Among the known factors of PTL etiology are PTL occurrence in previous pregnancies, multiple pregnancies, polyhydramnios, vaginal bleeding during pregnancy, premature membrane rupture (PMR) and bacterial vaginosis. Despite the advancement achieved in Neonatology, morbidity and mortality resulting from high rates of preterm births have remained constant in the last few decades. Objective: This study aims at evaluating maternal and perinatal outcomes of pregnant women with a history of preterm labor in previous pregnancies and submitted to active search for vaginal infection. Material and Method: It is a prospective-cohort epidemiological study to be conducted in Botucatu/SP. Two study groups (G1 and G2) will be formed, and each of them will comprise 140 pregnant women with a history of preterm childbirth. G1 will be related to the active search and etiological diagnosis of lower genital tract infections, and G2 will be related to non-search for such infections, for which the routine care protocol of primary health units in the city of Botucatu will be maintained. Care propedeutics for the pregnant women (G1) will include the performance of direct examination of vaginal content stained by the Gram method, culture in Diamonds medium, polymerase chain reaction (PCR) of endocervical secretion collected in the primary health care services in the city at two moments: prior to the 20th gestational week (M1) and at the 36th week (M2). Moment M3 will take place after childbirth for evaluation of the perinatal outcome.