نتایج جستجو برای: fetal defects
تعداد نتایج: 218360 فیلتر نتایج به سال:
Fetal alcohol spectrum disorder (FASD) is a frequent cause of mental retardation. However, the molecular mechanisms underlying brain development defects induced by maternal alcohol consumption during pregnancy are unclear. We used normal and Hsf2-deficient mice and cell systems to uncover a pivotal role for heat shock factor 2 (HSF2) in radial neuronal migration defects in the cortex, a hallmar...
Maternal phenylketonuria (MPKU) is a teratogenic syndrome, caused by development of offspring in a uterine environment made toxic by the metabolic imbalance of PKU. The birth defects resulting from untreated MPKU include microcephaly with concomitant mental retardation, growth retardation, and congenital heart defects. Congenital heart defects have been identified and characterized in MPKU offs...
Background and purpose: Around three million fetuses lose their life before birth each year. Recognizing the risk factors of these deaths could help in controlling and preventing at least a number of them. This study was conducted to determine the risk factors for uterine deaths. Materials and methods: This cross-sectional study was conducted in 225 cases of fetus uterine deaths aged >20 week ...
BACKGROUND Trisomy 18, the second most common autosomal trisomy, has the highest incidence of congenital heart disease of all chromosomal abnormalities. This study assessed the use of nuchal translucency (NT) measurement and fetal echocardiography at 16 to 18 weeks of gestation in prenatal detection for trisomy 18. METHODS Screening for chromosomal aneuploidy using fetal NT measurement was pe...
Fetal magnetic resonance imaging (MRI) is a useful adjunct to ultrasound in the evaluation of neural tube defects. The development of ultrafast imaging techniques has contributed to the increasing clinical use of fetal MRI. This review summarizes the utility, safety and technical aspects of fetal MRI and the role it plays in the evaluation of myelomeningocele. Emphasis is placed on the benefit ...
Megacystis at 10-14 weeks of gestation: chromosomal defects and outcome according to bladder length.
AIMS To examine the prevalence of chromosomal defects and outcome of fetuses with megacystis at 10-14 weeks of gestation. METHODS At the 10-14-week scan fetal megacystis was defined by a longitudinal bladder diameter of 7 mm or more. In 145 such fetuses the fetal karyotype and pregnancy outcome were examined in relation to the longitudinal diameter of the fetal bladder. RESULTS Chromosomal ...
to AVB and myocarditis, respectively, resulting in a poor prognosis. We previously reported that fetal hydrops is associated with a poor prognosis in fetuses without CHD7 and we suggested that myocardial dysfunction, rather than the severity of bradyarrhythmia, was associated with fetal hydrops. In contrast, in fetuses with CHD, congenital bradyarrhythmia is thought to result from the structura...
Congenital heart disease is the most common abnormality in the human fetus. Fetal echocardiography has been used to detect the majority of cardiac defects, and it is now part of the routine screening method for fetal evaluation. In this article, we present standard ultrasonographic views of the normal fetal heart obtained during the second trimester, first-trimester fetal echocardiography findi...
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