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Nuchal fold thickness is measured towards the end of the second trimester. As nuchal translucency size increases, the chances of a chromosomal abnormality and mortality increase; 65% of the largest translucencies (>6.5mm) are due to chromosomal abnormality, while fatality is 19% at this size. [2]
[2] However, a flurry of independent studies in the late '80s and '90s affirmed the diagnostic value of fetal ultrasound, and the nuchal translucency scan (pictured), the first-trimester analog of the nuchal fold thickness test, is now a standard component of prenatal aneuploidy screening.
Perhaps the most common such test uses a measurement of the nuchal translucency thickness ("NT-test", or "Nuchal Scan"). Although 91% of fetuses affected by Down syndrome exhibit this defect, 5% of fetuses flagged by the test do not have Down syndrome. Ultrasound may also detect fetal organ anomaly.
A nuchal cord was diagnosed if the cord was visualized lying around at least 3 of the 4 sides of the neck. A cord was actually present at delivery in 52 of the 289 women. Only 18 of the 52 cords or 35% of the nuchal cords were detected on ultrasound done immediately before delivery, and 65% of nuchal cords were not detected.
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Nuchal fold=Nuchal translucency. This is untrue: At the end of the second trimester, the nuchal translucency can no longer be seen and instead the nuchal fold is measured. The fold is more focal and at the level of the posterior fossa.
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Trio the Buffalos won Season 12 of "The Masker Singer" marking the first win from a group in the show's nearly six year run.