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Related Experiment Videos

Chorionic villus sampling: a 15-year experience.

Csaba Papp1, Artúr Beke, Gábor Mezei

  • 1First Department of Obstetrics and Gynecology, Medical School, Semmelweis University, Baross utca 27, H-1088 Budapest, Hungary.

Fetal Diagnosis and Therapy
|June 18, 2002
PubMed
Summary
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Transabdominal chorionic villus sampling (TA-CVS) significantly reduced pregnancy loss compared to transcervical CVS. TA-CVS is a safe and effective prenatal diagnostic method, recommended for use throughout pregnancy.

Area of Science:

  • Medical Genetics
  • Prenatal Diagnosis
  • Obstetrics

Background:

  • Chorionic villus sampling (CVS) is a key prenatal diagnostic technique.
  • Historically, transcervical CVS (TC-CVS) was prevalent, with transabdominal CVS (TA-CVS) gaining prominence later.
  • Indications for CVS have evolved to include cytogenetic and molecular-genetic testing, alongside ultrasound findings.

Purpose of the Study:

  • To evaluate the safety and efficacy of chorionic villus sampling (CVS) over a 15-year period.
  • To compare the outcomes of transcervical CVS (TC-CVS) and transabdominal CVS (TA-CVS).
  • To analyze the impact of different indications on pregnancy loss rates.

Main Methods:

  • Retrospective analysis of 1,149 CVS procedures performed between 1984-1999.

Related Experiment Videos

  • Comparison of TC-CVS (prior to 1994) and TA-CVS (after 1994) outcomes.
  • Data collection focused on indications, complications, and pregnancy loss.

    • Main Results:

    • Pregnancy loss within 3 weeks of sampling decreased from 4.8% with TC-CVS to 1.7% with TA-CVS.
    • TA-CVS demonstrated fewer complications and spontaneous abortions compared to TC-CVS.
    • Sampling for suspicious ultrasound findings showed a significantly higher pathological rate (14%).

    Conclusions:

    • Transabdominal CVS (TA-CVS) is a safer and more effective method than TC-CVS, with reduced pregnancy loss.
    • TA-CVS is a viable alternative to mid-trimester amniocentesis and is recommended throughout pregnancy.
    • Ultrasound screening is crucial for identifying fetal anomalies, guiding prenatal diagnostic decisions.