The description from Baby Center about what Nuchal translucency screening is:
This prenatal test (also called the NT or nuchal fold scan) can help your healthcare practitioner assess your baby’s risk of having Down syndrome (DS) and some other chromosomal abnormalities as well as major congenital heart problems.
The NT test uses ultrasound to measure the clear (translucent) space in the tissue at the back of your developing baby’s neck. Babies with abnormalities tend to accumulate more fluid at the back of their neck during the first trimester, causing this clear space to be larger than average.
The NT scan must be done when you’re between 11 and 14 weeks pregnant. (The last day you can have it done is the day you turn 13 weeks and 6 days pregnant.) It’s usually offered along with a blood test in what’s known as first-trimester combined screening.
Like other screening tests, an NT scan won’t give you a diagnosis. But it can assess your baby’s risk for certain problems and help you decide whether you want to have chorionic villus sampling (CVS) or amniocentesis to find out whether your baby is actually affected.
The NT scan has been performed in the United States since 1995, mostly at large medical centers. Ultrasound technicians (sonographers) and doctors need special training and high-resolution ultrasound equipment to perform it correctly. They must be certified by the Fetal Medicine Foundation in London, the organization that sets the international standards and provides the software that enables a doctor to evaluate your baby’s risk.
I sense that this test is the beginning of many ways that we’ve introduced new ways to worry about pregnancy. The desire to know everything comes from the fear that something scary will happen with the pregnancy. But, strangely, because of the nature of these results, knowing more in many cases only causes you to worry more. Not only that, but doing these tests costs money and also increase the chance of miscarriage.
Another statistic, mentioned in last week’s This American Life, which focused on America’s health care system, is that up to 33% of our medical procedures are not needed. Because we feel like the insurance companies charge us too much, we in turn try to run up our hospital bills with costs to justify the big spending, which in turn makes us a country that spends a lot on health care but isn’t any healthier.
I suspect that the infinite number of blood tests, screenings, etc are a big part of that 33% of things that don’t need to happen. Less is more. By avoiding these tests, I will be saving money (our health insurance has a $3,000 deductible and only covers bills 80% after that, so costs are very real to us), we will be avoiding procedures that increase the risk of problems, and in the meantime we won’t have to worry about ambiguous results and statistics and false reasons to worry.
What do others think about this?
{ 4 comments }


