
This study assessed the clinical significance of nuchal translucency (NT) measurements between the 95th and 99th percentile in relation to chromosomal abnormalities, fetal congenital defects, and postnatal outcomes. The overall rate of genetic abnormalities was 12.1%, with chromosomal abnormalities detected in 10.1% of cases and atypical chromosomal abnormalities in 2%. All atypical chromosomal abnormalities were found in fetuses with congenital defects. The study concluded that NT measurements in this range carry a ten-fold increased risk of fetal defects, warranting a detailed fetal anatomy evaluation.
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