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What is your nuchal?
The nuchal (say “NEW-kuhl”) translucency screening is a test done during pregnancy. It uses ultrasound to measure the thickness of the fluid buildup at the back of the developing baby’s neck. If this area is thicker than normal, it can be an early sign of Down syndrome, trisomy 18, or heart problems.
What is the nuchal measurement?
Definition. The nuchal translucency test measures the nuchal fold thickness. This is an area of tissue at the back of an unborn baby’s neck. Measuring this thickness helps assess the risk for Down syndrome and other genetic problems in the baby.
Where is nuchal fold?
The nuchal fold (NF) thickness is a measurement performed on prenatal ultrasound, and is the distance from the outer edge of the occipital bone to the outer edge of the skin in the midline.
What should be the NT value at 12 weeks?
First trimester measurement of NT at 12 weeks of gestation was 3.2 mm during the routine first trimester screening. The normal range of NT for this age is 1.1-3 mm.
How much NT is normal?
A baby with an NT of 1.3mm is within the normal range. The baby with an NT of 2.9mm is also within the limit of normal range. As the NT increases, so does the chance of Down’s syndrome and other chromosomal conditions.
What is the normal range of Trisomy 21?
In the trisomy 21 pregnancies the median free β-hCG was 2.0 (range, 0.1–11.3) MoM and the median PAPP-A was 0.5 (range, 0.05–2.2) MoM….Results.
| Parameter | Median (range) or n (%) |
|---|---|
| 13 + 0 to 13 + 6 weeks | 19 342 (34.1) |
| Crown–rump length (mm) | 62.9 (45.0–84.0) |
| Karyotype | |
| Normal | 56 376 (99.3) |
Why is the nuchal fold measured?
The predominant reason for measuring the nuchal fold is that it is a soft marker for aneuploidy. As an isolated finding, it has a likelihood ratio of 3.25 for Down syndrome 9.
What does large nuchal fold mean?
Many studies have shown that a thickened nuchal fold in a second-trimester fetus is a sonographic sign suggestive of a high risk for Down syndrome. These series have included fetuses already at risk for aneuploidy because of advanced maternal age or abnormal maternal serum alpha-fetoprotein (AFP) levels.
What is a nuchal ridge?
Medical Definition of nuchal line : any of several ridges on the outside of the skull: as. a : one on each side that extends laterally in a curve from the external occipital protuberance to the mastoid process of the temporal bone. — called also superior nuchal line.
What is the nuchal plane?
n. The external surface of the squamous part of the occipital bone giving attachment to the muscles of the back of the neck.
What is normal nuchal fold?
The nuchal fold is a normal fold of skin at the back of a baby’s neck. This can be measured between 15 to 22 weeks in pregnancy as part of a routine prenatal ultrasound. Follow-up is offered when the nuchal fold is thick (6 mm or more). Many healthy babies have thick nuchal folds.
What is considered a high NT measurement?
NT fluid is seen in all babies. When there is more fluid than usual, it is called “increased nuchal translucency” or “large NT”. The NT is considered large when it is 3.0 mm (about 1/8 inch) or more.
What is the meaning of nuchal?
Definition of nuchal : of, relating to, or lying in the region of the nape : of, relating to, or lying in the region of the nape
Where is the geographic center of Kentucky?
Kentucky, officially the Commonwealth of Kentucky is a state located in the east-central United States. It is bordered on the north by Illinois, Indiana, and Ohio; on the south by Tennessee; by West Virginia and Virginia on the east and Missouri borders Kentucky on the west. The geographic center of the state is in Marion County.
Is Kentucky part of the Appalachian Mountains?
A significant portion of eastern Kentucky is part of Appalachia . Kentucky borders seven states, from the Midwest and the Southeast. West Virginia lies to the east, Virginia to the southeast, Tennessee to the south, Missouri to the west, Illinois and Indiana to the northwest, and Ohio to the north and northeast.
What is the population of Northern Kentucky?
The Northern Kentucky area, which comprises the seven Kentucky counties in the Cincinnati/Northern Kentucky metropolitan area, had a population of 447,457 in 2018. The metropolitan areas of Louisville, Lexington, and Northern Kentucky have a combined population of 2,402,958 as of 2018