نتایج جستجو برای: nuchal translucency measurement
تعداد نتایج: 443386 فیلتر نتایج به سال:
Nuchal translucency (NT) measurements in the first trimester screening between 11 and 14 weeks' gestation are regarded as a clear marker for aneuploidies. The presence of a thickened NT, even if the karyotype is normal, can be associated with structural abnormalities. Having an abnormal screening of NT, parents and physicians could face dilemma over abortion particularly in a case of IVF/ICSI f...
OBJECTIVE To evaluate the performance and cost efficacy of different first-trimester contingent screening strategies based on an initial analysis of biochemical markers. DESIGN Retrospective study. SETTING Swedish National Quality Register for prenatal diagnosis. POPULATION 35,780 women with singleton pregnancies. METHODS Serum values from first trimester biochemistry were re-analyzed i...
Sonographic assessment of nuchal translucency (NT) thickness has been recognized as an effective means of screening for trisomy 21 and other chromosomal abnormalities at 11–14 weeks of gestation. Up to 80% of aneuploid fetuses have increased NT, but this feature is also found in 5% of karyotypically normal fetuses at this stage of pregnancy (Snijders et al., 1998). As this screening test examin...
background: there is no published data on the association between serum biochemical and ultrasonographic markers and adverse pregnancy outcomes. therefore, the aim of this study was to determine the factors associated with perinatal outcomes in singleton pregnancies using ultrasound and maternal serum markers during the first trimester in panamanians. materials and methods: this was a prospecti...
background: considering that establishment of reference value of nuchal translucency (nt)-related to the crown rump length (crl) during the first trimester will be helpful for determining an appropriate cutoff level for screening of increased nt thickness-related abnormalities, we determined the nt thickness and investigated its relation with diff erent chromosomal and nonchromosomal abnormali...
BACKGROUND/AIM The aim of the study was to evaluate the association and the potential predictive value of first trimester ultrasonographic parameters on the course and outcome of monochorionic diamniotic twin pregnancies. MATERIALS AND METHODS A prospective cohort study was undertaken of 39 healthy women with consecutive monochorionic diamniotic twin pregnancies. During first-trimester screen...
BACKGROUND It is uncertain how best to screen pregnant women for the presence of fetal Down's syndrome: to perform first-trimester screening, to perform second-trimester screening, or to use strategies incorporating measurements in both trimesters. METHODS Women with singleton pregnancies underwent first-trimester combined screening (measurement of nuchal translucency, pregnancy-associated pl...
OBJECTIVE To investigate whether measurement of maternal serum placental growth factor (PLGF) can improve the performance of first-trimester combined screening for trisomy-21 by fetal nuchal translucency (NT) thickness and serum free β-human chorionic gonadotropin (β-hCG) and PAPP-A. METHODS In singleton pregnancies attending for routine care, serum PLGF, free β-hCG and PAPP-A were measured a...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید