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Related Experiment Videos

Chorion villus biopsy.

R J Lilford

    Clinics in Obstetrics and Gynaecology
    |September 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Chorion villus sampling (CVS) offers early prenatal diagnosis at 10 weeks gestation, suitable for gene analysis. While widely used for cytogenetics, its abortion risk and replacement of amniocentesis remain under evaluation.

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    Area of Science:

    • Prenatal Medicine
    • Medical Diagnostics
    • Genetics

    Background:

    • Early prenatal diagnosis is crucial for genetic and chromosomal abnormalities.
    • Chorion villus sampling (CVS) emerged as a technique to meet this need.
    • Current prenatal diagnostic methods include amniocentesis and CVS.

    Purpose of the Study:

    • To evaluate the efficacy and safety of chorion villus sampling (CVS) for early prenatal diagnosis.
    • To compare CVS with established prenatal diagnostic methods like amniocentesis.
    • To assess the suitability of CVS for both gene probe and cytogenetic diagnoses.

    Main Methods:

    • Chorion villus sampling performed around 10 weeks of gestation.
    • Direct analysis of chorionic villus tissue without culture, where feasible.

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  • Application of gene probe techniques and cytogenetic analysis for diagnosis.
  • Data collection on approximately 10,000 patients reported to a Central Registry.

    • Main Results:

    • Chorionic villus tissue is often suitable for direct analysis, particularly for gene probe diagnosis.
    • CVS is increasingly utilized for cytogenetic diagnosis, especially for maternal age indications.
    • The procedure-related abortion rate is estimated at 2-3% in skilled hands, potentially lower with the transabdominal route.

    Conclusions:

    • Chorion villus sampling provides an option for early prenatal diagnosis.
    • The technique is suitable for direct genetic analysis and widely used for cytogenetics.
    • Further evaluation is needed to determine if CVS will supersede amniocentesis as the standard prenatal diagnostic method.