Down Syndrome: Prenatal Risk Assessment and Diagnosis - American Family Physician
Aug 15, 2000 - Down syndrome (trisomy 21) is the most commonly recognized genetic cause of mental retardation. The risk of trisomy 21 is directly related to maternal age. All forms of prenatal testing for Down syndrome must be voluntary. A nondirective approach should be used when presenting patients ...
American Family Physician : Article
https://www.aafp.org/afp/2000/0815/p825.html
Fetal Aneuploidy: Screening and Diagnostic Testing - American Family Physician
Apr 15, 2020 - Aneuploidy is the presence of one or more extra chromosomes or the absence of one or more chromosomes. The risk of fetal aneuploidy rises with increasing maternal age. Because fetal aneuploidy can affect any pregnancy, all pregnant women should be offered screening. First-trimester ...
American Family Physician : Article
https://www.aafp.org/afp/2020/0415/p481.html
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