Dating ultrasound for amnio
[Chromosomal mapping] allows the detection of trisomies (extra chromosomes), monosomies (missing chromosomes), and other structural defects in the chromosomes.
Most people have 46 chromosomes, in 23 pairs, but some have an extra copy of one chromosome, called a trisomy because there are three of one chromosome pair.
"The technology of prenatal diagnosis is usually presented to us as a solution, but it brings with it problems of its own..technology of prenatal diagnosis has changed and continues to change women's experience of pregnancy." All pregnant women in our technology-happy modern society face confusing choices about prenatal testing, its advantages and disadvantages, and its appropriateness for them.
Large pregnant women face even more confusion, since prenatal testing can be slightly harder in this population, and the results can be more confusing.
Amniocentesis is the process of inserting a needle into the uterus to withdraw some amniotic fluid from around baby for testing.
Most women think of these as a simple blood test, a cursory part of prenatal care.
They don't consider that intimately wrapped up in the question of prenatal testing is the moral dilemma of abortion and the thorny issue of eugenics.
Her writing is a fair and balanced look at the intricacies and difficulties of this issue.
But she has found through extensive interviewing of parents involved in such testing that most of them were simply unprepared to confront the scope of the types of decisions presented by prenatal testing, and that choosing such testing often changed the way a woman experienced pregnancy in subtle ways.