NT stands for nuchal translucency, which is a measurement taken during a prenatal ultrasound. It refers to the fluid-filled space at the back of the baby's neck, between the skin and the spine.
Why is NT Measurement Important?
A measurement of the NT is performed between 11 and 14 weeks of pregnancy. It is a screening test for chromosomal abnormalities like Down syndrome, Trisomy 18, and Trisomy 13.
How is NT Measured?
The NT measurement is taken using a specialized ultrasound machine. The sonographer will look for the clear space at the back of the baby's neck and measure it using a ruler on the screen. The results are expressed in millimeters.
What do the Results Mean?
A normal NT measurement is typically less than 3.5 millimeters. A higher measurement may indicate an increased risk of chromosomal abnormalities. However, it is important to note that a high NT measurement does not necessarily mean the baby has a chromosomal abnormality.
What Happens if the NT Measurement is High?
If the NT measurement is high, the doctor may recommend further testing, such as amniocentesis or chorionic villus sampling (CVS), to confirm or rule out a chromosomal abnormality.
Importance of NT Measurement
NT measurement is a valuable screening tool that can help identify pregnancies with an increased risk of chromosomal abnormalities. It allows parents to make informed decisions about further testing and management of their pregnancy.
