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Ense Kalınlığı ile Down Sendromu Taraması

SCREENING DOWN SYNDROME WITH NUCHAL TRANSLUCENCY

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Abstract (2. Language): 
The most frequently used antenatrel test performed is made for screening Down syndrome. The syndrome, described first by Langdon Down in 1866, is the most commonly seen chromosomal abnormality in live births. In 1980s, the syndrome was screened by only maternal age, then the triple test was used. In early 1990s, it was observed that there is increased nuchal thickness in the first trimester ultrasound of fetuses with Down syndrome. After years of research, a first trimester screening test with nuchal thickness as the main parameter is actually under use in many centers worldwide. This review examines this first trimester screening test, based on the com¬bination of fetal nuchal thickness, maternal age and maternal serum biochemistry at 10-14 weeks of gestation.
Abstract (Original Language): 
Gebelikte en sık uygulanan tarama testi Down sendromunu saptamaya yönelik olandır. ilk defa 1866'da Langdon Down'in tanımladığı sendrom, canlı doğumlarda en sık rastlanan kromozom anomalisidir. Down sendromu, 1980'lerde maternal yaş ile saptanmaya çalışılıyordu, daha sonra üçlü test uygulamaya girdi. 1990'ların başında Down sendromlu fetusların 1. trimester ultrasonlarında ense kalınlığının arttığı saptandı. Yıllar süren çalışmalar sonucunda ana parametresi ense kalınlığı (EK) ölçümü olan 1. trimester tarama testi bugün artık bazı merkezlerde klinik uygulamaya girmiştir. Bu derlemede fetal EK, maternal yaş ve maternal serum biyokimyası kullanılarak, gebeliğin 11-14. haftalarında uygulanan 1. trimester tarama testi değerlendirilmektedir
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