View clinical trials related to Preeclampsia.
Filter by:The aim of the present study is to establish, using polysomnographic criteria and prospective nature, whether sleep apnea in pregnancy is more prevalent in women with high risk pregnancies including preeclampsia, gestational diabetes, and pre-mature contractions, and to determine the effect of sleep disordered breathing in pregnancy on fetal outcome. The investigators' hypothesis is that sleep-disordered breathing is more prevalent in women with high risk pregnancy compared to those with uncomplicated pregnancy.
Preeclampsia (PE) complicates 2-8% of pregnancies. It is associated with an increased risk of adverse maternal (death, eclampsia, abruptio placenta, HELLP syndrome) and perinatal (perinatal death, growth restriction, prematurity) outcomes. The only definite treatment of PE remains pregnancy termination. Therefore, prevention of PE remains an important challenge. Low dose aspirin may be used in the prevention of PE, particularly in women who had a severe preeclampsia before 34 weeks. Its efficiency, however, is very weak. Recently, it has been suggested that low molecular weight heparin might be useful in the prevention of PE. The aim of this study is to analyze the usefulness of the enoxaparin 4000 UI/day in the prevention of a composite maternal or perinatal morbidity (occurrence of one of the following events: maternal death, PE, fetal growth retardation, abruptio placenta, perinatal death) in women who previously had a severe preeclampsia at less than 34 weeks' gestation. To answer this question, the investigators propose to conduct a multicenter prospective randomized trial that will compare two groups in parallel: a group where women will have an association of enoxaparin 4000 U/day and aspirin 100 mg/day and another group where women would have only aspirin 100 mg/day. The number of patients needed is 255 (amendment n°2-approved 06/12/2011) .
The hypertensive disorders of pregnancy are the medical complications more prevalent during pregnancy. In Canada, approximately 1% of pregnancies have complications due to a pre-existing hypertension, 5-6% because of hypertension of pregnancy without proteinuria and 1-2% by preeclampsia. Metabolomics involves a new technology to investigate small molecules that characterize biochemical pathways of interest. The change in concentration levels of these molecules in various biological samples such as urine and blood in the presence of a disease or a patient can be particularly useful for identifying new biomarkers. Our hypothesis is that metabolic patterns in blood and urine of pregnant women who had preeclampsia differ from the metabolomics patterns of patients without preeclampsia.The whole research program has two complementary objectives in order to expect a decrease of prematurity: a) better understanding of all the physiological mechanisms leading to prematurity and b) better identification of patients at high risk for a better management of these women.
Assessment of biochemical and sonographic marker to predict the risk for developing preeclampsia Among biochemical markers are serum level of Placental Protein 13 (PP13) and Placenta Growth factor (PIGF). For sonographic marker Doppler pulsatility Index of the blood flow through the uterine maternal arteries is assessed. PP13 is produced by the placenta and released to the maternal blood circulation. It has been shown to be an effective serum marker for early onset preeclampsia (Nicolaides KH et al., 2005). The purpose of this study is to combined the assessment of the biochemical markers with Doppler in the first and the second trimester to provide a comprehensive evaluation of various methods for sequential and combined analysis to assess the risk for developing preeclampsia.
The purpose of this study is to figure out some of the differences in bodily function between women who have preeclampsia and those who do not. - This may eventually lead to an understanding of its cause. At this time, there is no known way to prevent preeclampsia, and the cause is not known. - The only treatment is delivery of the baby, even if it is premature, in order to decrease the risk to the mother.
Primary objective: - To investigate whether physical exercise prior to pregnancy in formerly preeclamptic women results in a comparable improvement of vascular and endothelial functioning as in women who had an uneventful pregnancy. Secondary objectives: - Which cardiovascular and endothelial parameters are involved in the vascular adaptation to training in women with a history of preeclampsia. - To study the vascular adaptation in the (next) pregnancy in women with a history of preeclampsia compared with women with a history of an uncomplicated pregnancy, after improvement of their physical condition by exercise training. This study is important in order to get a better understanding of the vascular and endothelial factors involved in preeclampsia and the effects of training on this profile. Results of this study can contribute to the improvement of preventing hypertensive complications in pregnancy and reduction of life time risk of cardiovascular disease in formerly preeclamptic women.
At the moment, most of efforts to prevent non-transmissible chronic diseases at population level have been centered in promoting healthful behaviors like physical activity, consumption of fruits and vegetables, and discouraging from the consumption of tobacco and alcohol in adult population, but the results have been little hopeful. In the last years, manifold studies have indicated the relation between metabolic alterations and of the fetal growth with the development of non-transmissible chronic diseases in adult age. More recently, it has been proposed that maternal factors (endothelial function, oxidative stress and alterations in adipokines) and placental ones (mitochondrial dysfunction) are the precursory mechanisms of fetal metabolic alterations and of the later development of non-transmissible chronic diseases. Also, it has been suggested that possibly supplementation with micronutrients and the physical exercise during the gestation can regulate these maternal and placental factors. For the reasons just mentioned, it is necessary to clarify if these proposed factors are related to fetal metabolic alterations and if the supplementation during the gestation with micronutrients and/or the physical exercise can regulate them, which would be an early and novel alternative to fortify the prevention of non-transmissible chronic diseases in the population. Purpose 1. To evaluate the effect of associated both the maternal and placental metabolic factors to non-transmissible chronic diseases in newborn. 2. To evaluate the effect of the physical exercise and the complementation with micronutrients during the pregnancy either in the endothelial function, the levels of adipokines, the oxidative stress of the mother and the newborn, as in the placental mitochondrial function and the anthropometry of newborn.
The investigators intend to perform a large prospective study looking at the predictability of the random urine protein-to-creatinine ratio compared to the gold standard 24-hour urine protein collection. Furthermore, the investigators plan to investigate whether analysis of proteinuria at shorter time intervals (4 and 8 hours) within the overall 24-hour collection period is predictive of the 24-hour sample. Lastly, the investigators plan to determine whether a combination of the random test with a shorter collection interval is comparable to the 24-hour collection.
Infections affecting the mother during pregnancy may produce alterations in the normal cytokine and hormone-regulated gestation, which could result in preeclampsia, preterm labor, premature rupture of membranes, and preterm birth. Therefore, pregnant women with periodontal disease may show an alteration in the cytokine levels which may cause preeclampsia in them.
Objective: To investigate the role of maternal serum YKL-40 and uterine artery doppler, at gestational age 12, 20, 25 and 32 weeks, and the relation to preeclampsia and intrauterine growth restriction. The serum marker YKL-40 is related to conditions involving inflammation, infection, tissue remodeling, fibrosis and cancer. IUGR and preeclampsia are known to be related to inflammation and tissue remodeling. Methods: women attending screening for downs syndrome is scanned with uterine artery doppler and delivered blood samples at GA 12, 20, 25 and 32 respectively. When pregnancy outcome is registered by medical records blood samples are retrieved and analyzed for serum YKL-40. Serum YKL-40 are correlated to the presence of bilateral notching, preeclampsia and different degrees of intrauterine growth restriction.