| A good sagittal section of the fetus must be obtained, with the fetus horizontal on the screen | Outcome data of the pregnancies were available in all |
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| A small, thin hypoechoic space in the posterior fetal neck is a common finding in normal first-trimester fetuses | reported accurately even if less than 1 |
Fetal crown-rump length must be between 38 mm and 84 mm A nuchal translucency measurement greater than 2.
| 5 mm The nuchal translucency NT refers to the pocket of fluid at the back of the fetal neck | 5 mm was found in 4 |
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| In such cases, you should refer the woman for specialist scanning and counselling• Submicroscopic chromosomal imbalance is associated with an increased nuchal translucency NT | These fetuses are at increased risk for structural abnormalities and aneuploidy, |
Nuchal translucency NT measurements in the first trimester screening between 11 and 14 weeks' gestation are regarded as a clear marker for aneuploidies.
19| Ideally, the thickness of nuchal translucency increases with the CRL | For comparison, the ultrasound image on the right shows an 11-week fetus with a normal nuchal translucency measurement |
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| Normal reference range of fetal nuchal translucency thickness in pregnant women in the first trimester, one center study | It is important because if the fetus has a greater-than-normal amount of swelling at the back of the neck, there is a high likelihood that the baby will have Down Syndrome or a major heart problem or both The nuchal translucency screening is a normal ultrasound |
Table 3: The expected 5th, 25th, 50th, 75th, and 95th percentile values of NT thickness mm to gestational age GA - Normal reference range of fetal nuchal translucency thickness in pregnant women in the first trimester, one center stud• Nuchal skin fold NF measurements and prenatal follow-up ultrasound findings were normal.
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