View clinical trials related to Preeclampsia.
Filter by:The investigators seek to describe the composition, architecture, and electrical conduction properties of the human uterine myometrial artery and their impact on vascular reactivity upon exposure to hypertensive stress. Non-pregnant women and pregnant women with and without hypertensive complications will be studied to evaluate the influence of these states on the myometrial arteries. Vascular over-reactivity and disruption of the normal pregnancy-associated physiologic changes of relaxed vascular tone possess the potential for non-compensated blood flow to the uterus and placenta that is insufficient to meet the metabolic demands of a growing placenta. With an understanding of these changes, the research team will be able to propose basic mechanistic changes of pathologic myogenic tone that may ultimately be investigated as potentially modifiable processes to reduce the development and/or severity of these pregnancy complications (gestational hypertension, preeclampsia, eclampsia, small for gestational age, intrauterine growth restriction and intrauterine fetal demise. ).
200 women at risk factor for preeclampsia will be subjected to transabdominal Doppler ultrasonography for assessment of placental volume measurements, pulasatility index (PI) and resistivity index (RI) in both uterine arteries, and assessment of the placental volume and its vascular indices (VI, FI, VFI)
Admission CTG for 20 minutes Settings on a CTG machine was standardised to enable a consistent approach of interpretation of traces. Paper speed of 3cm per minute will be adopted. Maternal heart rate was recorded and noted on CTG. Following birth date, time and mode of delivery will be labelled on CTG. Magnesium sulphate was administered by continuous intravenous infusion according to our hospital protocol as follows: - Loading dose: 4-6 gm of magnesium sulphate diluted in 100 mL of IV fluid administered over 15-20 min. - Maintenance dose: 2 gm/hr in 100 mL of IV infusion to be continued for 24 hours after delivery. Another 20 minutes CTG strip will be performed 20 minutes after administration of IV loading MgSO4, 7H2O and thus ensuring that MgSO4 has reached peak serum levels
Adaptation of the maternal immune system to accommodate the semi-allogeneic fetus is necessary for pregnancy success. Dysregulation of this immune adaptation is implicated in reproductive disorders as infertility, recurrent miscarriage, fetal growth restriction, and preeclampsia. The mechanisms being responsible for fetal tolerance are not known. Several T cell subsets have been implicated in fetal tolerance. The effects of preeclampsia on memory cells are not known. The main objective of this study is to analyze the effect of preeclampsia on levels of immune cells.
Second trimester homocysteine & uterine artery doppler will be assessed& the cases will be followed up till delivery for development of preeclampsia, IUGR(intra-uterine growth retardation) & other obstetric complications.
The etiologic agent responsible for the development of preeclampsia remains unknown. Aquaporins, members of integral membrane proteins, are responsible of water molecules movements through the plasma membrane channels, energy metabolism and associated with changes in cellular volume during apoptosis. İn such placental pathology as preeclampsia, characterized with superficial implantation and increased apoptosis leading to a relative hypoxia between mother and fetus, the hypothesis of aquaporins important role in energy homeostasis and apoptosis maybe suggested.
Preeclampsia is one of the three leading causes of maternal morbidity and mortality all over the world. The use of low dose aspirin has been mentioned in several studies with promising results. The investigators decided to evaluate the use of low dose aspirin, starting between 13 and 16 weeks of pregnancy, based on clinical characteristics only to reduce the incidence of preeclampsia.
The purpose of this study is to build a model for the prediction of adverse perinatal outcome for preeclampsia in china
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.
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.