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Amniocentesis and chorionic villus sampling

J L Stone1, C J Lockwood

  • 1Mount Sinai Medical Center, New York, New York.

Current Opinion in Obstetrics & Gynecology
|April 1, 1993
PubMed
Summary
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First-trimester amniocentesis offers a safe and effective prenatal diagnostic method. However, ongoing research addresses concerns about orthopedic abnormalities and neural tube defect diagnosis reliability.

Area of Science:

  • Perinatology
  • Prenatal Diagnostics
  • Genetics

Background:

  • Amniocentesis at 16-18 weeks is the standard for prenatal cytogenetic diagnosis.
  • Chorionic villus sampling (CVS) is a safe and effective alternative for prenatal diagnosis.
  • CVS has raised questions regarding limb abnormalities, multiple gestations, and confined placental mosaicism.

Purpose of the Study:

  • To evaluate the technical feasibility, safety, and accuracy of early amniocentesis (first or early second trimester).
  • To address concerns associated with chorionic villus sampling limitations and potential risks.

Main Methods:

  • Review of studies investigating first and early second-trimester amniocentesis.
  • Analysis of safety, efficacy, and diagnostic accuracy data.

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Main Results:

  • Early amniocentesis appears safe and effective for prenatal diagnosis.
  • Concerns remain regarding potential orthopedic abnormalities.
  • Reliability of first-trimester markers for neural tube defects requires further investigation.

Conclusions:

  • First-trimester amniocentesis is a viable option for prenatal diagnosis.
  • Further research is needed to fully understand risks and optimize diagnostic accuracy for specific conditions.