Clinical Trials About "Detection Risk Fetal Trisomy Blood Tests Free Fetal" RSS

22:41 EST 23rd February 2020 | BioPortfolio

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Showing "Detection Risk Fetal Trisomy Blood Tests Free Fetal" Clinical Trials 1–25 of 42,000+

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"Circulating Fetal DNA, Pregnancy And Immune Diseases"

In the plasma of any pregnant patient circulates DNA (also called circulating free DNA). The vast majority of this circulating free DNA is of maternal origin and about 10% is of fetal origin (fetal circulating free DNA). This percentage of fetal circulating free DNA (corresponding to the fetal fraction) increases with gestation. The pathophysiological hypothesis of this research is that there is a change in the fetal fraction (FF) of fetal circulating free DNA in patients with...

Non-Invasive Screening for Fetal Aneuploidy: A New Maternal Plasma Marker

Validate that circulating cell free fetal nucleic acid can be used to identify a direct marker for fetal aneuploidy, particularly fetal Down Syndrome (DS), that is better than surrogate markers.

First Trimester Screening for Trisomy 21, 18, 13 and 22q11.2 Deletion Syndrome

Combined first-trimester screening represents the gold standard of risk assessment for the presence of trisomy 21, 18, and 13. The concept is based on the age risk, the measurement of fetal nuchal translucency (NT), and the determination of serum markers free beta-hCG and PAPP-A in maternal blood. In recent years it has been shown that the risk assessment can be improved by combining in-depth ultrasound and cell-free DNA analysis from maternal blood. In their latest study, ...

Non-invasive Screening of Fetal Trisomy 21 by Digital PCR

In France, as in many countries of the world, trisomy 21 or Down syndrome (DS) is the subject of an antenatal screening based on a risk calculation (R) including the assay of biochemical markers in the maternal blood, and the measurement of a fetal ultrasound parameter (nuchal translucency). In the population of pregnant women said to be at high risk (R> 1/250), confirmation of the diagnosis of DS is made by invasive sampling (trophoblast biopsy or amniocentesis), which allows ...

Non Invasive Prenatal Diagnosis of Trisomy 21 by Genetic Analysis of Circulating Fetal Cells

The objective of this project is to develop a non-invasive prenatal diagnostic test for trisomy 21 which is reliable, sensitive and cost-effective, and thus, offers an alternative to the currently employed invasive diagnostic tests amniocentesis and chorionic villus sampling. Current prenatal screening methods (blood markers and ultrasound) for trisomy 21 (Down syndrome) detect about 90 % of cases and have a false positive rate of > 90 %. The results of these tests are e...

Automated Screen for Fetal Aneuploidy

The purpose of this study is to develop and evaluate a blood test and automated microfluidic test platform for the prenatal screening of fetal aneuploidy.

Non-Invasive Determination of Fetal Chromosome Abnormalities

The overall significance of this study is to develop a laboratory developed test (LDT) to use a new marker in the maternal blood to better identify pregnancies that have a child with a chromosome abnormality such as Down syndrome (trisomy 21), Edward's syndrome (trisomy 18), Patau syndrome (trisomy 13), Klinefelter syndrome, (47, XXY), and other chromosome abnormalities. Accomplishing that task would reduce the need for invasive amniocentesis and CVS procedures.

Electrophysiology of Fetal Arrhythmia

Fetal research and clinical practice has been hampered by a lack of suitable investigational techniques. Currently, ultrasound is the only widely used method of studying fetal anatomy and physiology, but it has significant limitations for assessment of cardiac rhythm. The proposed study will allow us to investigate fetal magnetocardiography (fMCG) as a new tool for the study of normal and abnormal fetal heart rate and rhythm.

Fetal Electrophysiologic Abnormalities in High-Risk Pregnancies Associated With Fetal Demise

Each year world-wide, 2.5 million fetuses die unexpectedly in the last half of pregnancy, 25,000 in the United States, making fetal demise ten-times more common than Sudden Infant Death Syndrome. This study will apply a novel type of non-invasive monitoring, called fetal magnetocardiography (fMCG) used thus far to successfully evaluate fetal arrhythmias, in order to discover potential hidden electrophysiologic abnormalities that could lead to fetal demise in five high-risk preg...

MatErnal BLood IS Source to Accurately Diagnose Fetal Aneuploidy

The primary objective of this study is to determine the performance characteristics (sensitivity and specificity) of the Artemis Health Test to detect fetal Trisomy 21 (T21) compared to karyotype results obtained by amniocentesis or chorionic villus sampling (CVS).

The Value of Advanced Imaging Sequences for Fetal MRI in Clinical Practice

This project is split into 4 sections: 1. Can improvements be made in the Magnetic resonance imaging sequences used to image the fetus in order to improve diagnostic accuracy? 2. Does 3T improve the quality and diagnostic value of fetal MRI when compared to 1.5T 3. Can fetal MRI be used to image the fetal heart? 4. Can fetal MRI be used to image the fetal Bones?

Development of a Fetal Sex Assay From Maternal Whole Blood

Whole blood from pregnant women will be collected to develop a noninvasive fetal sex test.

First Trimester Risk Assessment Based on Ultrasound and Cell-free DNA vs Combined Screening

There is an ongoing debate regarding how cell-free DNA (cfDNA) screening can best be incorporated into current prenatal screening algorithms for chromosomal abnormalities. Test performance of cfDNA has been shown to be better that first-trimester combined screening (FTCS). However, the cost of the cfDNA testing is considered too high to adopt as first line screening. Moreover, FTCS includes a detailed ultrasound examination of the fetus with nuchal translucency (NT) measuremen...

Expanded Noninvasive Genomic Medical Assessment: The Enigma Study

In January 2007, the American Congress of Obstetricians and Gynecologists (ACOG) revised its guidelines that now recommend physicians are ethically obligated to fully inform all pregnant women that screening for fetal chromosomal abnormalities including biochemical screening tests and invasive procedures such as CVS or amniocentesis is available, regardless of age. Further, it is entirely up to the patient to decide whether or not she wishes to be screened for fetal chromosomal...

Computerized Antepartum Monitoring Using Non-invasive Fetal Ecg for High Risk Pregnancy

The long term aim of this research is to evaluate a portable NI-FECG (Non-invasive fetal ECG) monitor (Holter NI-FECG) which can be used for regular remote assessment of fetal health in pregnancies at risk or to follow-up on treatments. The elaboration of a NI-FECG Holter device will offer new opportunities for fetal diagnosis and remote monitoring of problematic pregnancies because of its low-cost, non-invasiveness, portability and minimal set-up requirements.

Ultrasonographic Parameters for Fetal Weight Prediction

The hypothesis is to increase the predictability of the ultrasound examination evaluating new fetal parameters: in fact the thickness of the soft tissues can contribute significantly to the fetal weight and the characteristics of the thoracic cage may correlate with the fetal weight.

Cell-free Fetal DNA Concentration in Cases of Abnormal Placental Invasion .

Cell free fetal DNA might predict abnormal placental invasion

Effects of Fetal Movement Counting in Third Trimester of Pregnancy

The aim is to test effects of using formal kick counting chart in the third trimester of pregnancy in an unselected population. The research questions are: Does Fetal Movement Counting: 1. Improve the identification of risk pregnancies/pathology? 2. Affect the women's well-being? 3. Stimulate maternal-fetal attachment antepartum?

Fetal Cardiac Function Evaluation With aCMQ-Strain Fetal (STRAIN)

To assess whether the aCQM-Strain ultrasound method allows a good analysis of fetal cardiac function. Establish normality parameters and compare it with fetuses with risk factors of cardiac dysfunction.

Determinants of Fetal Inflammatory Exposure at Term

The hypothesis of this study is that maternal and fetal biologic variation in the balance between pro-inflammatory and anti-inflammatory mediators can be measured by currently available techniques. In addition, the investigators hypothesize that a pro-inflammatory maternal phenotype increases the risk of fetal exposure to intrauterine hyperthemia and inflammatory cytokines; and that intrapartum events, especially known risk factors for fever at term such as epidural analgesia ...

Causes of Fetal Death: Comparison of Diagnostic Accuracy Between Extensive and Selective Protocol Testing

Intrauterine fetal death (IUFD) is defined as the occurrence of fetal death at >20 weeks' gestation. IUFD affects about 1 in 160 pregnancies (6-7 per 1000 births). Optimal diagnostic evaluation for cases of IUFD is generally based on extensive protocol testing i.e. maternal and fetal blood tests, fetal bacteriology, cytogenetic analysis, autopsy, and placental examination. This extensive protocol testing may vary in clinical practice and interpretation of the results is rarely ...

The National Standard for Normal Fetal Growth

Background: - Normal fetal growth is a critical component of a healthy pregnancy and the long-term health of the offspring. Pivotal to understanding the dynamics of human fetal growth and to defining normal and abnormal fetal growth is the development of standards for fetal growth. Objectives: - To establish a standard for normal fetal growth and size for gestational age in the U.S. population. - To create an individualized sta...

WHO Fetal Growth Charts

Perinatal mortality and morbidity continue to be major global health challenges strongly associated with prematurity and reduced fetal growth, an issue of further interest given the mounting evidence that fetal growth in general is linked to degrees of risk of common noncommunicable diseases in adulthood. Ultrasound estimation of fetal weight before birth is today very widely used in clinical practice, and, while essential for the identification and management of high-risk preg...

Intra-uterine Fetal Brain Activity Monitoring.

Fetal cardiac monitoring is used during labor. Fetal decelerations may imply fetal hypoxia and distress. Brain activity monitoring is not used to evaluate fetal distress during labor. In this study the investigators intend to use an EEG based algorithm to evaluate and monitor fetal brain activity during the 2nd stage of labor.

Can Conventional ECG Technology Capture Fetal Cardiac Activity?

This is a feasibility study for a new application for capturing fetal cardiac activity. The objective of this study is to determine if it is feasible to capture a fetal ECG signal using a Holter ECG device. As comparison we will use a standard Doppler Fetal Heart Rate (FHR) device.

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