MEASUREMENT OF FETAL NASAL BONE LENGTH, PRENASAL THICKNESS AND CORPUS CALLOSUM LENGTH OF FETUSES IN THRACE REGION OF TURKEY
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Tarih
2020
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info:eu-repo/semantics/openAccess
Özet
Aim: The nasal bone can be imaged with ultrasonography from the 10th week of pregnancy. In situations where the nasal bone isaplastic or hypoplastic, the risk of chromosomal anomalies increases. Thickening of the prenasal soft tissue is also apparent in the vastmajority of second-trimester fetuses with Down syndrome. In addition to these, corpus callosum is an another fetal structure that can bevisualized from 18th weeks of the gestation by ultrasound. Agenesis or dysgenesis of it is related with neuro-disabilities. In this study ourobjective was to provide reference charts for fetal nasal bone length, prenasal thickness and corpus callosum length obtained byprenatal sonography between 19th and 23rd weeks of pregnancy.Materials and Methods: The medical records of pregnant women who were followed-up in Trakya University School of Medicine,Department of Obstetrics & Gynecology, Division of Perinatology during the time period of 1st of January 2018 to 31st of December2019 were reviewed retrospectively. We studied 167 patients in between 19th and 23rd weeks of pregnancy.Results: Nasal bone length, prenasal thickness and corpus callosum length increased as the gestation proceeded. Mean±SD for nasalbone length, prenasal thickness and corpus callosum length (mm) between 19th and 23rd weeks were 6.65±0.7, 4±0.5, 20.1±1.4respectively.Conclusion: Ultrasound measurements of nasal bone length, prenasal thickness and corpus callosum can be performed within thesecond-trimester anomaly scan, and these measurements appear to be highly necessary because these measurement sensitive forprenatal diagnosis of chromosomal abnormalities and genetic syndromes.
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8
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2
