A brief description of the test, its purpose, and the procedures used are given for each test, but the majority of the information is about the specifics of large women and the test.If you need more detail about statistics, interpretation of results, rates of 'false-positives', etc., then be sure to research the many websites devoted to prenatal testing online.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.Barbara Katz Rothman points out: The history of prenatal diagnosis has roots in the eugenics movement..of its history has been an attempt to control the gates of life: to decide who is, and who is not, fit to make a contribution to the gene pool.Katz Rothman is by no means arguing against the use of prenatal testing; she actually presents a number of compelling reasons to consider it.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.
Kmom uses certain types of prenatal testing herself, and under certain circumstances, might choose to use other types too.
And because the overall bias of our technological culture is towards doing more and more testing, Kmom feels an extra responsibility to challenge the automatic assumption that more testing is better.
However, by no means is Kmom condemning testing completely, nor does she criticize those who do choose to test.
The ultrasound "transducer" uses crystalline structures to convert electrical energy into ultrasound waves.
These are directed towards fetal structures and "bounce" off of them.