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Related Experiment Videos

First trimester screening for structural fetal abnormalities: nuchal translucency sonography.

P C Devine1, F D Malone

  • 1Department of Obstetrics and Gynecology, Columbia University College of Physicians and Surgeons, Columbia-Presbyterian Medical Center, New York, NY 10032, USA.

Seminars in Perinatology
|November 7, 1999
PubMed
Summary

Increased nuchal translucency in early pregnancy ultrasounds indicates a higher risk for fetal abnormalities, including Down syndrome and structural defects. This finding warrants further diagnostic evaluation for affected pregnancies.

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Area of Science:

  • Prenatal diagnosis
  • Fetal medicine
  • Medical imaging

Background:

  • Nuchal translucency is a measurement of the subcutaneous space between the skin and cervical spine in first-trimester fetuses.
  • Increased nuchal translucency is a known risk factor for aneuploidy, such as Down syndrome.
  • It is also recognized as a nonspecific marker for various fetal structural abnormalities.

Purpose of the Study:

  • To review the association of increased nuchal translucency with fetal anomalies.
  • To discuss the potential pathophysiology and prognostic significance of increased nuchal translucency.
  • To highlight the role of nuchal translucency in guiding further prenatal assessment.

Main Methods:

  • Literature review of studies investigating nuchal translucency and fetal outcomes.

Related Experiment Videos

  • Analysis of the relationship between the degree of nuchal translucency and the prevalence of fetal anomalies.
  • Synthesis of current understanding regarding the pathophysiology and clinical implications.

    • Main Results:

    • Increased nuchal translucency is linked to a higher risk of aneuploidy and a broad spectrum of fetal structural defects.
    • The degree of nuchal translucency correlates with the likelihood of fetal anomalies and may have prognostic value.
    • Potential underlying causes include cardiac dysfunction or impaired lymphatic drainage.

    Conclusions:

    • Increased nuchal translucency serves as a crucial marker identifying pregnancies requiring enhanced prenatal surveillance.
    • Further sonographic evaluation and fetal echocardiography may be indicated.
    • The utility of nuchal translucency screening in the general population requires additional research.