Predictive value of fetal nuchal translucency

Aim To determine the predictive value of fetal nuchal translucency(NT) measurements in the detection of chromosomopathy. Methods The investigation of NT included 317 pregnant women with singleton pregnancies of gestational age of 11 to 14 weeks with pathological karyotype. The control group consiste...

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Main Author: Dragan Lončar
Format: Article
Language:English
Published: Medical Association of Zenica-Doboj Canton 2011-02-01
Series:Medicinski Glasnik
Subjects:
Online Access:http://www.ljkzedo.com.ba/medglasnik/vol81/MGvol81.2011_4.pdf
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author Dragan Lončar
author_facet Dragan Lončar
author_sort Dragan Lončar
collection DOAJ
description Aim To determine the predictive value of fetal nuchal translucency(NT) measurements in the detection of chromosomopathy. Methods The investigation of NT included 317 pregnant women with singleton pregnancies of gestational age of 11 to 14 weeks with pathological karyotype. The control group consisted of pregnant women whose amniocentesis findings indicated a normal fetal karyotype. Results The median value of NT in the control group was 1.92 ± 0.39 mm, and in the group with pathological fetus karyotype findings it was 2.49 ± 0.37 mm (p<0.05). The median value of crown-rump length was 64.83 ± 8.23 mm and 60.12 ± 8.48 mm in the control group and in the group with pathological karyotype, respectively. The gestational age in the control group was 87.10 ± 87.10 days, while in the pathological group it was 85.69 ± 3.98 days, which indicated the homogeneity of the investigated sample(p> 0.05). The probability for a patient with negative NT findings to be healthy was 1.0, NT sensitivity as a marker for chromosomopathy was 1.0. The rate of false positive findings was 0.026. The specificity of NT as a marker for chromosomopathy was 0.97. Conclusion Normal NT findings could be considered reliable ultrasonographic markers in the assessment of the absence of chromosomopathy. Pathological findings, given the low positive predictive value of NT must be interpreted in the context of other prenatal tests before the pregnant woman is advised to undergo invasive prenatal diagnosis.
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spelling doaj.art-dca5da6f42224e20aa2595d46c8396162022-12-22T03:51:20ZengMedical Association of Zenica-Doboj CantonMedicinski Glasnik1840-01321840-24452011-02-01811923Predictive value of fetal nuchal translucencyDragan LončarAim To determine the predictive value of fetal nuchal translucency(NT) measurements in the detection of chromosomopathy. Methods The investigation of NT included 317 pregnant women with singleton pregnancies of gestational age of 11 to 14 weeks with pathological karyotype. The control group consisted of pregnant women whose amniocentesis findings indicated a normal fetal karyotype. Results The median value of NT in the control group was 1.92 ± 0.39 mm, and in the group with pathological fetus karyotype findings it was 2.49 ± 0.37 mm (p<0.05). The median value of crown-rump length was 64.83 ± 8.23 mm and 60.12 ± 8.48 mm in the control group and in the group with pathological karyotype, respectively. The gestational age in the control group was 87.10 ± 87.10 days, while in the pathological group it was 85.69 ± 3.98 days, which indicated the homogeneity of the investigated sample(p> 0.05). The probability for a patient with negative NT findings to be healthy was 1.0, NT sensitivity as a marker for chromosomopathy was 1.0. The rate of false positive findings was 0.026. The specificity of NT as a marker for chromosomopathy was 0.97. Conclusion Normal NT findings could be considered reliable ultrasonographic markers in the assessment of the absence of chromosomopathy. Pathological findings, given the low positive predictive value of NT must be interpreted in the context of other prenatal tests before the pregnant woman is advised to undergo invasive prenatal diagnosis.http://www.ljkzedo.com.ba/medglasnik/vol81/MGvol81.2011_4.pdfnuchal translucencyultrasonographychromosomopathypredictive statistics
spellingShingle Dragan Lončar
Predictive value of fetal nuchal translucency
Medicinski Glasnik
nuchal translucency
ultrasonography
chromosomopathy
predictive statistics
title Predictive value of fetal nuchal translucency
title_full Predictive value of fetal nuchal translucency
title_fullStr Predictive value of fetal nuchal translucency
title_full_unstemmed Predictive value of fetal nuchal translucency
title_short Predictive value of fetal nuchal translucency
title_sort predictive value of fetal nuchal translucency
topic nuchal translucency
ultrasonography
chromosomopathy
predictive statistics
url http://www.ljkzedo.com.ba/medglasnik/vol81/MGvol81.2011_4.pdf
work_keys_str_mv AT draganloncar predictivevalueoffetalnuchaltranslucency