title: New trends in prenatal screening for chromosomal abnormalities.
abstract: In the recent years, the scope of prenatal genetic diagnosis has expanded greatly with the development of a number of new methods, such as maternal serum screening and ultrasound screening for detection of fetal abnormalities. These methods have the advantage of providing earlier diagnosis in addition to being non-invasive and of less psychological traumas. Pre-implantation genetic diagnosis is another new growing field offering the genetic diagnosis prior to implantation. The most promising of all is the first trimester biochemical screening in conjunction with ultrasound nuchal translucency screening.
authors.affiliation: Ob/Gyn Department, King Khalid University Hospital, PO Box 7805, Riyadh 11472, Kingdom of Saudi Arabia.
authors.forename: M H
authors.initials: MH
authors.lastname: Addar
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood; D002869:Chromosome Aberrations / Q000097:blood / Q000175:diagnosis* / Q000453:epidemiology / Q000235:genetics; D025063:Chromosome Disorders; D004964:Estriol / Q000097:blood; D005260:Female; D005819:Genetic Markers; D005820:Genetic Testing / Q000379:methods*; D006801:Humans; D008423:Maternal Age; D018579:Patient Selection; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D019836:Preimplantation Diagnosis / Q000379:methods; D011296:Prenatal Diagnosis / Q000379:methods*; D015995:Prevalence; D000509:alpha-Fetoproteins / Q000378:metabolism
chemical_list: D006063:Chorionic Gonadotropin; D005819:Genetic Markers; D000509:alpha-Fetoproteins; D004964:Estriol