title: First trimester screening.
abstract: Screening for aneuploidy has traditionally been reserved for women of advanced maternal age. More recent advances in serum screening and ultrasound technology have allowed women of all ages to be offered screening in the second and even first trimester. These methods and their effectiveness are discussed.
authors.affiliation: Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, USA. sarah.ellestad@duke.edu
authors.forename: Sarah C
authors.initials: SC
authors.lastname: Ellestad
authors.forename: Steven R
authors.initials: SR
authors.lastname: Wells
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Kuller
mesh_terms: D000782:Aneuploidy; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D030342:Genetic Diseases, Inborn / Q000175:diagnosis* / Q000235:genetics; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*