First trimester growth delay: An early marker of triploidy
نویسندگان
چکیده
منابع مشابه
First trimester intact hCG as an early marker of trisomy 21: a promise unrecognised?
BACKGROUND An initial study of trisomy 21 cases showed that prior to 10 weeks, maternal serum levels of intact hCG in the early first trimester are lower than normal. Here we further study the levels prior to and after 10 weeks of gestation to further establish whether or not the intact hCG is effective as a very early screening marker. METHODS Fifty-nine samples from pregnancies with trisomy...
متن کاملFirst-trimester screening for trisomies 18 and 13, triploidy and Turner syndrome by detailed early anomaly scan.
OBJECTIVE To examine the performance of first-trimester ultrasound screening for trisomies 18 and 13, triploidy and Turner syndrome based on fetal nuchal translucency thickness (NT), additional fetal ultrasound markers including anatomy of the nasal bone (NB), blood flow across the tricuspid valve (TV) and through the ductus venosus (DV) and a detailed fetal anomaly scan at 11-13 weeks' gestati...
متن کاملSecond-Trimester Diagnosis of Triploidy: A Series of Four Cases
Triploidy occurs in 2 to 3% of conceptuses and accounts for approximately 20% of chromosomally abnormal first-trimester miscarriages. As such, triploidy is estimated to occur in 1 of 3,500 pregnancies at 12 weeks', 1 in 30,000 at 16 weeks', and 1 in 250,000 at 20 weeks' gestation. We present a series of four cases of second-trimester triploidy diagnosed at our center within a 1-year timeframe. ...
متن کاملNon-Invasive Prenatal Testing of Trisomy 18 by an Epigenetic Marker in First Trimester Maternal Plasma
BACKGROUND Quantification of cell-free fetal DNA by methylation-based DNA discrimination has been used in non-invasive prenatal testing of fetal chromosomal aneuploidy. The maspin (Serpin peptidase inhibitor, clade B (ovalbumin), member 5; SERPINB5) gene, located on chromosome 18q21.33, is hypomethylated in the placenta and completely methylated in maternal blood cells. The objective of this st...
متن کاملInm-1: Indication of First Trimester Sonongraphy
Improvement in ultrasound technology, including transvaginalsonography and higher frequency probes, has led to a better understanding of early pregnancy development. The first trimester ultrasound have been identified that can be used to reassure women that their pregnancy is progressing normally or abnormal them that their pregnancy will fail. The practicing radiologist and obstetrician must b...
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ژورنال
عنوان ژورنال: Clinical Journal of Obstetrics and Gynecology
سال: 2019
ISSN: 2640-2890
DOI: 10.29328/journal.cjog.1001032