نتایج جستجو برای: preterm labour
تعداد نتایج: 65239 فیلتر نتایج به سال:
Cervical incompetence is often associated with mid trimester pregnancy losses and preterm labour. cervical cerclage to prevent miscarriage and preterm labour is practiced world wide. The objective of this study was to document the feto-maternal outcome following cervical cerclage for cervical incompetence. The study reviewed all case files of pregnant women who had cervical cerclage for cervica...
Risk factors. The presence of ‘risk factors’ in the woman’s history could theoretically be used to select a group of women for treatment.. Probably the most efficient risk factor known is a previous preterm birth, which is associated with about a three-fold increase in the risk of a further preterm delivery1. However, this only raises the risk to about 30% and is not applicable to nulliparae. I...
Parturition is composed of five separate but integrated physiological events: fetal membrane rupture, cervical dilatation, myometrial contractility, placental separation and uterine involution. Prostaglandins (PGs) have central roles in each of these, but the most studied is myometrial contraction. Elevated uterine PGs or the enhanced sensitivity of the myometrium to PGs leads to contractions a...
The onset of labour in rodents and in humans is associated with physiological inflammation which is manifested by infiltration of activated maternal peripheral leukocytes (mPLs) into uterine tissues. Here, we used flow cytometry to immunophenotype mPLs throughout gestation and labour, both term and preterm. Peripheral blood was collected from non-pregnant women and pregnant women in the 1st, 2n...
Risk factors. The presence of ‘risk factors’ in the woman’s history could theoretically be used to select a group of women for treatment.. Probably the most efficient risk factor known is a previous preterm birth, which is associated with about a three-fold increase in the risk of a further preterm delivery1. However, this only raises the risk to about 30% and is not applicable to nulliparae. I...
Prevention and treatment of preterm delivery is not one of the success stories of modern medicine, preterm birth constitutes the major determinant of perinatal mortality and morbidity, and the long-term results of being born too early often lead to a shorter, less healthy life and a more difficult school and professional career. Different methods have been introduced to predict the advent of pr...
Progesterone regulates female reproductive function predominantly through two nuclear progesterone receptors (PRs), PR-A and PR-B. During human parturition myometrial PR expression is altered to favour PR-A, which activates pro-labour genes. We have previously identified histone H3 lysine 4 trimethylation (H3K4me3) as an activator of myometrial PR-A expression at labour. To further elucidate th...
Human labour is associated with increased prostaglandin synthesis within the uterus. The aim of this study was to examine the expression of the type-IV cytosolic phospholipase A2 (cPLA2-IV) and the type IIA secretory phospholipase A2 (sPLA2-IIA) in myometrium in association with labour onset at term and preterm deliveries. These enzymes are important for the release of the prostaglandin precurs...
This is a retrospective case control study. Out of a total of 1238 births occurring over a period of 8 months at the Aga Khan University Medical Centre, Karachi, 9.4% were preterm. Factors found to be associated with preterm labour were age > 35, height < 156 cm, anaemia or urinary tract infection in pregnancy, abruptio placentae, polyhydramnios, preterm rupture of membranes, intrauterine growt...
BACKGROUND Preterm labour is the main cause of perinatal morbidity and mortality in the Western world. At present, there is evidence that tocolysis for 48 hours is useful in women with threatened preterm labour at least before 32 weeks. This allows transfer of the patient to a perinatal centre, and maximizes the effect of corticosteroids for improved neonatal survival. It is questionable whethe...
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