Abstract:
:A method is described to combine the ultrasound marker nuchal translucency (NT) with serum markers so that they can be used together in prenatal screening for Down syndrome in twin pregnancies. For monochorionic twin pregnancies (taken as monozygous), the two fetus-specific NT measurements are averaged before risk is calculated and before the contribution of the serum markers is incorporated. For dichorionic twin pregnancies (taken as dizygous), the risk for each fetus based on the individual NT measurements is calculated, the two fetus-specific risks are added together, and then the contribution of the serum markers is incorporated. In this way, all the screening markers can be used in combination to produce a pregnancy-specific "pseudo-risk", rather than a fetus-specific pseudo-risk. We refer to pseudo-risk because in the absence of sufficient data on the screening markers in affected twin pregnancies, a true risk estimate cannot be calculated. Tentative estimates are given of screening performance in twins using NT, the combined test (NT with first-trimester serum markers), and the integrated test (NT with first- and second-trimester serum markers), all interpreted with maternal age.
journal_name
Prenat Diagnjournal_title
Prenatal diagnosisauthors
Wald NJ,Rish S,Hackshaw AKdoi
10.1002/pd.627subject
Has Abstractpub_date
2003-07-01 00:00:00pages
588-92issue
7eissn
0197-3851issn
1097-0223journal_volume
23pub_type
杂志文章abstract::We report a case of nuchal cystic hygroma with spontaneous resolution detected by ultrasound examination at 13 weeks' gestation. Fetal karyotype and amniotic fluid alpha-fetoprotein levels were normal. Extreme caution in evaluating this situation is stressed. ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970100607
更新日期:1990-06-01 00:00:00
abstract:OBJECTIVES:Polyhydramnios is suggested to be associated with oral clefts (OCs) due to swallowing problems. This study assessed incidence and outcome of idiopathic polyhydramnios in isolated OC pregnancies. METHODS:This was a retrospective cohort study of prenatally diagnosed OC. The incidence of idiopathic polyhydramn...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.4983
更新日期:2017-02-01 00:00:00
abstract::Activity levels of total and placental alkaline phosphatase (AP) were determined in maternal serum and neutrophils of normal and Down syndrome pregnancies. The placental iso-enzyme (PAP) was identified by its relative stability to urea and heat. Significant increase in the activity of all iso-enzymes across gestationa...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:
更新日期:1999-03-01 00:00:00
abstract::Glutamic-oxaloacetic transaminase (GOT1) gene dosage studies were performed on uncultured amniotic cells from a fetus at risk for duplication/deficiency of 10q24 leads to qter, due to maternal translocation t(9;10)(p24;q24). Previous investigations in the same pedigree had shown triplex dosage effect of GOT1 on red bl...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970030410
更新日期:1983-10-01 00:00:00
abstract:OBJECTIVES:To identify expressed sequence tag (EST) clusters preferentially expressed in placentas. METHODS:The National Center for Biotechnology's online UniGene database contains 14 placenta libraries. In silico (computer-based) subtraction compared placenta libraries against the remaining libraries to identify tran...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.608
更新日期:2003-05-01 00:00:00
abstract:OBJECTIVE:We sought to compare the fetal nasal bone length (FNBL) between different ethnic groups at 11-14 weeks' gestation. METHODS:FNBL and the FNBL/CRL ratio were measured in patients undergoing first trimester ultrasound for nuchal translucency (NT) and the ethnicity of the patient was recorded under four categori...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1195
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:To reevaluate the efficiency of the 12 differentially methylated regions (DMRs) used in the methylated DNA immunoprecipitation (MeDIP) real-time quantitative polymerase chain reaction (real-time qPCR) based approach, develop an improved version of the diagnostic formula and perform a larger validation study. ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.3947
更新日期:2012-10-01 00:00:00
abstract::A fetus was identified by prenatal cytogenetic diagnosis as having a karyotype 46,XY,r(13) (p11q13). Termination of the pregnancy yielded a severely malformed fetus. Fetal abnormalities included anencephaly, imperforate anus and urethral meatus, severe talipes, syndactyly, cardiac defects and other anomalies. Confirma...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970030406
更新日期:1983-10-01 00:00:00
abstract::A case of focal nodular hyperplasia of the liver presenting in a 36-week-old fetus is reported. The tumour appeared on antenatal ultrasound as a 4.0 cm x 3.0 cm x 2.7 cm hypoechoic mass at the periphery of the right lobe of the liver. Colour Doppler imaging showed it to have prominent vascularity. Postnatally, sonogra...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970140511
更新日期:1994-05-01 00:00:00
abstract:OBJECTIVES:Hysterotomy scar disruption, ranging from myometrial thinning to complete dehiscence, is a well-established complication of open-hysterotomy fetal myelomeningocele (MMC) repair. This study sought to (a) determine the feasibility of postoperative magnetic resonance imaging (MRI) in detecting signs of hysterot...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.5565
更新日期:2020-01-01 00:00:00
abstract::Pallister-Killian syndrome (tetrasomy 12p) is an uncommon aneuploidy, which may present in the prenatal period with an ultrasonographically detected fetal abnormality or following karyotyping for maternal age. We report a case that presented with increased nuchal translucency and hydrops at a first trimester screening...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/1097-0223(200008)20:8<670::aid-pd885>3.0.c
更新日期:2000-08-01 00:00:00
abstract::A polymorphic short tandem repeat (STR) in intron 3 (Goltsov et al., 1993) and a variable number of tandem repeats (Hind III-VNTR) flanked by two constant Hind III sites (Golstov et al., 1992) have been recently identified in the human phenylalanine hydroxylase (PAH) gene. These polymorphisms are easily detected by th...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970141011
更新日期:1994-10-01 00:00:00
abstract::Data from 3611 consecutive CVS (TC, N = 1780; TA, N = 1831) were analysed with emphasis put on influence of maternal and gestational age at CVS on the fetal loss rate less than 28 weeks. For TC-CVS the gestational age varied from 9.3-11.6 weeks, for TA-CVS from 9.3-20 weeks. Sampling efficacy at first attempt was 86.5...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970110811
更新日期:1991-08-01 00:00:00
abstract:OBJECTIVE:In this study, we expanded conventional cell-free fetal DNA (cfDNA)-based non-invasive prenatal testing (NIPT) to cover the entire genome. We aimed to compare the performance of the two tests in a large general population of pregnant women, in order to assess the clinical utility of the genome-wide screening....
journal_title:Prenatal diagnosis
pub_type: 临床试验,杂志文章
doi:10.1002/pd.5053
更新日期:2017-06-01 00:00:00
abstract::A study of the association between aneuploidy and fetal choroid plexus cysts (CPCs) is presented. By reviewing the world prospective and retrospective studies, one cannot reach an agreed conclusion since different study designs were used and meta analysis is not feasible. Our experience is that as a solitary ultrasono...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,评审
doi:
更新日期:1997-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the utility of determining the presence/absence of nasal bone in a low-risk fetal population. METHODS:Prospective study of the presence/absence of nasal bone among 1800 consecutive unselected fetuses, with complete follow-up of results. RESULTS:An adequate sonographic evaluation of nasal bone wa...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1345
更新日期:2006-02-01 00:00:00
abstract::Multiple placental passes during chorionic villus sampling (CVS) increase the risk of fetal loss; however, specific factors that predispose to repeat aspiration have not been delineated. To identify anatomic and technical variables associated with multiple-pass procedures, a detailed review of 205 videotaped CVS proce...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970120307
更新日期:1992-03-01 00:00:00
abstract::Preimplantation genetic diagnosis (PGD) was developed more than a decade ago to offer an alternative to prenatal diagnosis for couples at risk of transmitting an inherited disease to their offspring. Portuguese-type familial amyloidotic polyneuropathy (FAP type I), is an autosomal dominant disease presenting an inheri...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.250
更新日期:2001-12-01 00:00:00
abstract::We studied two children born to a myasthenic mother. The first child, a female, had multiple flexion contractures. She died 1 h after birth. In the second pregnancy, 3 years later, ultrasonographic examination at 20 weeks showed decreased fetal movements and multiple flexion contractures. The pregnancy was interrupted...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,评审
doi:10.1002/pd.1970110104
更新日期:1991-01-01 00:00:00
abstract::The cytogenetic results of 1500 chorionic villus samples (CVS) are presented. In these 1500 samples, 23 samples (1.5 per cent) could not be provided with a diagnosis because of laboratory failure. This failure rate dropped from 3 per cent in the first 500 samples to 0.2 per cent in the last 500. In the remaining 1477 ...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970100206
更新日期:1990-02-01 00:00:00
abstract::We present a family who sought prenatal diagnosis in order to bear a healthy child to serve as an HLA-identical bone marrow donor for their son affected with Wiskott-Aldrich syndrome. They intended to abort HLA-incompatible fetuses who would have been unsuitable bone marrow donors. This case led us to conclude that pr...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,收录出版
doi:10.1002/pd.1970090505
更新日期:1989-05-01 00:00:00
abstract::Amniocentesis and subsequent tests are reported on a fetus conceived of a rare mating type: its mother has an intermediate level of beta hexosaminidase A (HEX A), characteristic of carriers of Tay-Sachs disease (TSD), while the father suffers from an adult-onset GM2 gangliosidosis (AOG) with severe HEX A deficiency. A...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970060303
更新日期:1986-05-01 00:00:00
abstract:OBJECTIVE:The objective of the study is to assess the clinical application of noninvasive prenatal testing (NIPT) for VTS pregnancies after the treatment of assisted reproductive technology (ART). METHOD:This was a retrospective study on VTS pregnancies through ART treatment. Participants underwent NIPT at 11 to 13 we...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.5836
更新日期:2020-10-02 00:00:00
abstract::Prenatal diagnosis of Sandhoff disease (infantile onset) at 16 weeks gestation has been made by detection and analysis of N-acetylglucosaminyl-oligosaccharides in amniotic fluid using high performance liquid chromatography. The elution profile for the branched chain oligosaccharides was identical with that obtained wi...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970060602
更新日期:1986-11-01 00:00:00
abstract::Growth of cells from amniotic fluid was studied with respect to cell concentration in the inoculum, blood contamination of the fluid, fluid colour, fluid clarity, gestational age of the pregnancy, and growth factors. Dependent variables measured were colony formation, colony size, and colony morphology after 7, 11, an...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970030206
更新日期:1983-04-01 00:00:00
abstract:OBJECTIVE:The objective of this article is to evaluate the efficacy of the first trimester sonomarkers (11-14 weeks) in predicting hemoglobin (Hb) Bart's disease among fetuses at risk MATERIALS AND METHODS:Prospective analysis was conducted on pregnancies at risk of fetal Hb Bart's disease at 11 to 14 weeks of gestati...
journal_title:Prenatal diagnosis
pub_type: 临床试验,杂志文章
doi:10.1002/pd.4293
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND:Whole genome array testing not only provides an increased diagnostic yield of pathogenic causative findings, but it may also reveal so called susceptibility loci (SL) for neurodevelopmental disorders. The goal of this study was to evaluate the pregnancy outcomes in SL cases and to establish a protocol for pr...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.4979
更新日期:2017-01-01 00:00:00
abstract:OBJECTIVES:To evaluate the screening accuracy for Down syndrome of nuchal translucency (NT) measurement at different crown-rump length (CRL) subgroups along the 10- to 14-week period. METHODS:NT was classified 'enlarged' if greater than or equal to 1.5 and 2.0 multiples of the regressed median. Accuracies for Down syn...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1173
更新日期:2005-05-01 00:00:00
abstract::Large (>90%) for gestational age (LGA) fetuses are usually identified incidentally. Detection of the LGA fetus should first prompt the provider to rule out incorrect dates and maternal diabetes. Once this is done, consideration should be given to certain overgrowth syndromes, especially if anomalies are present. The o...
journal_title:Prenatal diagnosis
pub_type: 杂志文章,评审
doi:10.1002/pd.2319
更新日期:2009-10-01 00:00:00
abstract::In cystic hygroma (CH) fetuses, hydrops fetalis and anamnios make it difficult or impossible to obtain amniotic fluid or cord blood for cytogenetic analysis. We report six cases of CH in which cytogenetic analysis was simply and successfully performed using nuchal fluid cells. The karyotypes were 47,XY, + 18,46,XY,46,...
journal_title:Prenatal diagnosis
pub_type: 杂志文章
doi:10.1002/pd.1970120210
更新日期:1992-02-01 00:00:00