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Related Experiment Videos

Chorionic villus sampling: experience with an initial 940 cases.

J E Green1, A Dorfmann, S L Jones

  • 1Genetics & IVF Institute, Fairfax, Virginia.

Obstetrics and Gynecology
|February 1, 1988
PubMed
Summary
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Chorionic villus sampling is a safe prenatal diagnostic method. This study found low risks and no false-negative diagnoses, confirming its accuracy for genetic testing in pregnancy.

Area of Science:

  • Reproductive Genetics
  • Prenatal Diagnostics
  • Medical Procedures

Background:

  • Chorionic villus sampling (CVS) is a key prenatal diagnostic technique.
  • Assessing the safety and accuracy of CVS is crucial for clinical practice.
  • Previous studies highlight the need for data on complication rates and diagnostic reliability.

Purpose of the Study:

  • To evaluate the safety and efficacy of chorionic villus sampling (CVS).
  • To determine the complication rates associated with CVS.
  • To assess the diagnostic accuracy of direct trophoblast karyotyping.

Main Methods:

  • Retrospective analysis of over 1000 patients undergoing CVS.
  • Direct trophoblast karyotyping for cytogenetic analysis.

Related Experiment Videos

  • Monitoring for procedure-related complications and fetal loss.

    • Main Results:

    • Villus sampling failure occurred in 0.6% of cases (e.g., due to fibroids).
    • Procedure-related chorioamnionitis occurred in 0.2% of patients.
    • Total fetal loss was 2.4%, not significantly different from background rates; procedure-related loss estimated at 0.6%.

    Conclusions:

    • Chorionic villus sampling is a safe and accurate prenatal diagnostic method when performed by experienced teams.
    • Direct trophoblast karyotyping demonstrated no false-negative diagnoses.
    • A small percentage of pregnancies may require subsequent amniocentesis due to sampling failure or mosaicism.