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Related Experiment Videos

Screening for aneuploidy: the genetic sonogram.

Theresa L Stewart1

  • 1Maternal-Fetal Medicine/Genetics, Wilford Hall Medical Center, 2200 Bergquist Drive, Suite 1, 59 MDW/MMNO, Lackland AFB, TX 78248, USA. Theresa.Stewart@Lackland.AF.MIL

Obstetrics and Gynecology Clinics of North America
|April 6, 2004
PubMed
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Ultrasound screening, combined with maternal serum screening and age, offers personalized aneuploidy risk assessment. This approach provides a valuable alternative to invasive testing for many expectant mothers.

Area of Science:

  • Obstetrics and Gynecology
  • Medical Imaging
  • Prenatal Diagnosis

Background:

  • Ultrasound has significantly advanced prenatal care over the last decade.
  • It provides personalized risk assessment for aneuploidy, offering an alternative to invasive procedures.
  • The integration of soft markers in sonographic screening has proven beneficial.

Purpose of the Study:

  • To evaluate the role of ultrasound in aneuploidy risk estimation.
  • To determine the optimal combination of screening methods for accurate risk assessment.
  • To discuss the utility and limitations of ultrasound soft markers in different risk populations.

Main Methods:

  • Review of literature on ultrasound screening for aneuploidy.
  • Analysis of the combined use of ultrasound, maternal serum screening, and maternal age.

Related Experiment Videos

  • Evaluation of soft markers in high-risk versus low-risk populations.

    • Main Results:

    • Combined screening (ultrasound, serum, age) provides the best risk estimate.
    • Ultrasound soft markers are most valuable in high-risk populations.
    • Application of soft markers in low-risk populations yields low positive predictive value.

    Conclusions:

    • Ultrasound is an excellent tool for aneuploidy risk assessment when used appropriately with counseling.
    • The decision for or against invasive testing involves personal risk tolerance.
    • Understanding the benefits and limitations of ultrasound screening is crucial for expectant families.