Fetal nuchal translucency measurement (NT)

BABY ultrasound nuchal translucency measurement
Fetal nuchal translucency (NT) (Nuchal permeability = nuchal translucency) ultrasound appears to be dark at the back of the baby's neck refers to the thickness of the portion. 11 weeks 1 day to apply to pregnant women between 13 weeks and 6 days.

Increased fetal nuchal translucency and Down's syndrome is mainly a relationship between certain chromosomal abnormalities.

Increased fetal nuchal translucency nuchal translucency is more than 3 mm is considered.

Increased fetal nuchal translucency conditions: chromosomal abnormalities: trisomy 13, trisomy 18, trisomy 21 (Down syndrome), Turner syndrome (45, X0) does not increase fetal nuchal translucency only chromosome abnormalities. Increase in other situations: Cardiac abnormalities of lung abnormalities (diaphragmatic hernia) Renal anomalies abdominal wall anomalies (omphalocele and gastroschisis) Some genetic diseases (Arthrogryposis, Noonan syndrome, Smith-Lemli-Opitz syndrome, Stickler syndrome, Jarcho-Levin syndrome and fetal skeletal abnormalities in some increased nuchal translucency cases, cardiac abnormalities increased risk of fetuses with increased nuchal translucency do so should be evaluated by echocardiography.

How much greater in NT, the risk of fetal abnormality that increases in parallel. NT, normal values ​​were determined according to gestational age in each. Kaçlık per cent increase in these values ​​(percentiles) is determined by the risk. Percentile for gestational age is between 90-95% of NT thickness of more than 90% of fetuses with abnormalities is likely to have a chance. Abnormalities in patients with NT on a percentile of 99% is too much risk. In these cases, fetal chromosomal anomalies with CVS and detailed ultrasound examination of the fetus be considered whether it is scanned for possible anomalies. Between 14-16 weeks of fetuses with increased NT in chromo It is very important to re-evaluate, and normal limits, it goes back to this week nuchal edema, and this is a good indicator of the risk of anomalies in infants is low. If you are re-assessing the in between 14-16 weeks nuchal translucency in the fetus is low, this is likely to be a genetic abnormality or infection.