View clinical trials related to Preeclampsia.
Filter by:In this study, the investigators will evaluate the blood pressure response to nifedipine and labetalol in pregnant and postpartum patients, who present with hypertensive disease in pregnancy with severe range blood pressure defined as greater than 160/110. These anti-hypertensives are first line therapy for management of severe range blood pressures in pregnancy and postpartum by the American Congress of Obstetricians and Gynecologist (ACOG). In addition at the Mount Sinai West site, the investigators will also analyze the ADRB1 and similar genes involved in beta blockade, genes involved in calcium channel blockade and other genes implicated in blood pressure response among pregnant and postpartum patients receiving labetalol and nifedipine. This analysis will be used to determine if a pharmacogenetic association exists between variant alleles in these receptors in the pregnant and postpartum population.
In this study, the investigators assessed one of the released protein factors during the pathophysiology of preeclampsia. They evaluated vascular endothelial growth factor gene mutation which affects the angiogenesis in case of inadequate placentation and its association with Doppler changes in the pulsatility index of the umbilical artery.
Preeclampsia: associated with poor placentation, incomplete uteroplacental spiral arteries remodeling. Result: ischemia, re-perfusion injury, oxidative stress. A low-grade systemic inflammatory response is more pronounced in preeclampsia. This results in an imbalance between maternal circulating pro-angiogenic (PlGF & VEGF) & anti-angiogenic factors (sFlt-1). PlGF & VEGF function as vasodilators & preserve structure & function of glomerular endothelium. sFlt-1 blocks these actions, resulting in hypertension, endothelial dysfunction & nephropathy. Various stressors, including hypoxia, villous crowding, angiotensin II, & oxidative stress are associated with preeclampsia & mediate secretion of soluble vascular growth factor 1 (sVEGFR-1 or sFlt-1) by GADD45 (Growth Arrest and DNA Damage-45). GADD45 is one of a family of stress-induced genes sFlt-1 releases into maternal circulation. Excess sFlt-1 leads to endothelial dysfunction, hypertension & proteinuria. Exogenously administered sFlt-1 results in syndrome of nephrotic range proteinuria, hypertension, and glomerular endotheliosis in animal models. Women with preeclampsia tend to have higher sFlt-1 & lower PlGF, resulting in an increased ratio (sFlt-1:PlGF). The difference is greater in women who develop early-onset preeclampsia (before 34 wks gestation). Verlohren, et al., showed an increased sFlt-1/PlGF ratio in patients with preeclampsia as compared to controls & patients with chronic/gestational hypertension. Other work has examined the longitudinal changes in the individual values of sFlt-1 & PlGF over the course of the pregnancy, as well as the ratio. Given the low prevalence of preeclampsia in the population, the positive predictive value remained low, however the negative predictive value approached 97% late in gestation. This suggests that the utility of the sFlt-1/PlGF may be in its ability to rule out preeclampsia. More recently the PROGNOSIS study was designed to investigate the value of the sFlt-1/PlGF ratio for the prediction of the presence or absence of preeclampsia in the short term & found that a cutoff point of 38 for the sFlt-1/PlGF ratio is useful for predicting the short-term absence of preeclampsia in women with suspected disease (Negative predictive value 99.3% for ruling out preeclampsia within 1 week). Hypothesis: In women with chronic hypertension, the sFlt-1/PlGF ratio will better predict the development of superimposed preeclampsia than clinical criteria alone.
Preeclampsia is a systemic pregnancy disorder and is associated with an increased cardiovascular risk later in life. This study will characterize myocardial tissue in patients after preeclampsia compared to controls and investigate potential functional and structural changes in the heart of preeclamptic women primarily with two methods: cardiovascular magnetic resonance imaging and echocardiography. A comparison between these two methods, where appropriate, is also envisaged.
The aim of the PRECOG study is to determine in a prospective interventional randomized study whether the implementation of a predictive test based on the sFLT-1/PlGF ratio improves perinatal care and reduces costs, in patients with suspected preeclampsia before 35 weeks of gestation.
Preeclampsia is a pregnancy related disease characterized by the new onset of hypertension and proteinuria after 20 weeks of gestation in previously normotensive women. PE is one of the most challenging diseases in obstetrics worldwide that affects 2-8 % of pregnancies causing both morbidity and mortality of both mother and fetus.
Preeclampsia is a leading cause of maternal and neonatal morbidity and mortality worldwide. The morbidity and mortality of this condition arises from two main causes: 1) the lack of specific and sensible methods for its diagnosis and prognosis, 2) and the fact that the course of the disease is often unpredictability at its presentation and speed of progression. The majority of deaths are undoubtedly avoidable and are due to a substandard care. Nowadays it's known that preeclampsia is a placental disorder that is characterized by an unbalance of angiogenic and antiangiogenic factors. It has been recently proven that the ratio of sFlt-1 to PlGF in women who presented with a clinical suspicion of preeclampsia is useful distinguishing between women in whom preeclampsia would develop and those in whom it would not. A low ratio also predicted the absence of fetal adverse outcomes in the same time frame. In addition this ratio demonstrated to be useful to discriminate among patients that would developed maternal or fetal adverse outcome. Correct identification and diagnosis of women at risk could potentially prevent all these adverse outcomes thus, clinical experience suggests that early detection and monitoring are beneficial. EuroPE aims to provide evidence that the re-definition of pre-eclampsia as an entity caused by a placental unbalance of angiogenic and anti-angiogenic factors and its incorporation in the diagnosis and classification of the disease would improve maternal and neonatal health. This will be an open, multicentre, international, randomised controlled trial with an intention-to -treat analysis. The study is pragmatic: it will be undertaken to reflect real clinical practice rather than the very tightly controlled circumstances of explanatory trials. The main objective of this study is to determine the effects of the use of the ratio as a diagnostic tool in the definition and classification of PE, as compared with its usual definition, in triage and delivery decisions and to see whether this new approach is able to improve maternal and perinatal outcomes.
RATIONALE: Women with a previous history of preeclampsia (PE)/HELLP have a twofold higher risk of cardiovascular disease (CVD) and a fourfold increased risk to develop hypertension at a relative young age. In the latest 2016 ESC guidelines 'CVD prevention', previous PE has been acknowledged as a serious CVD risk factor in women. In clinical practice, however, these women are still underappreciated for their CVD risk. It has not been established yet how adequate lifelong prevention in these potentially high risk women can optimally be achieved from their childbearing years onwards. OBJECTIVE: To evaluate feasibility, usability, acceptance and potential obstacles of blood pressure (BP) home monitoring in high-risk women, aged 40-60 years, after a previous PE in pregnancy. In addition to evaluate the effectiveness of BP home monitoring on the occurrence of hypertension, the efficacy of BP treatment, quality of life (QOL), health-related symptoms, work ability and life-style behaviour. STUDY DESIGN: Randomized, open label feasibility study to compare eHealth guided self management of BP monitoring and lifestyle advice with 'usual care'. STUDY POPULATION: Approximately 200 women, aged ≥ 40 and ≤ 60 years, with a previous PE in pregnancy will be invited to participate (both early and late PE). Patients will be recruited from the departments of obstetrics/gynaecology in 6 centres in the Euregio Rhein-Waal and from the department of cardiology Radboudumc. INTERVENTION: eHealth guided measurements of BP at regular intervals and recurrent lifestyle advice (intervention-group) will be compared with "usual care". PRIMARY OUTCOME: Feasibility, usability, acceptance and potential obstacles of BP home monitoring in high-risk women after a previous PE in pregnancy at 1 year of follow-up.
This study plans to learn more about how to increase postpartum weight loss and how to decrease risk factors for postpartum women at increased risk for diabetes and heart disease. The program is delivered using a mobile application (app) and a lifestyle coach. This mobile application is developed for women who are at higher risk for diabetes and heart disease. Women who have gestational diabetes, (diabetes during pregnancy, or GDM), gestational hypertension (high blood pressure), and/or preeclampsia (high blood pressure and protein in the urine), and/or small-for gestational-age, and/or preterm (early) delivery during their pregnancies have a higher risk for diabetes and heart disease. This mobile application was developed using the latest research studies and using the evidence-based Diabetes Prevention and Colorado Weigh programs. The goal of the program is to help women lose weight and participate in physical activity after delivery.
Pre-eclampsia is one of the most serious complications of pregnancy affecting 3-8 % of pregnancies worldwide. It is a multi-system disorder involving maternal vessels (causing hypertension and endothelial dysfunction), the kidneys, the liver, the lungs, the hematological system, the cardiovascular system and the feto-placental unit. In its most severe form, it affects the brain, causing seizures (eclampsia), cerebro-vascular events and even death.