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Related Experiment Videos

Current method for first and second trimester prenatal diagnosis: transabdominal chorionic villi sampling.

K Buckshee1, S Parveen, I C Verma

  • 1Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi.

Asia-Oceania Journal of Obstetrics and Gynaecology
|March 1, 1990
PubMed
Summary

Transabdominal chorionic villi sampling (CVS) is a safe and effective prenatal diagnostic method. This study shows high success rates for CVS in early pregnancy, enabling timely genetic analysis.

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Area of Science:

  • Obstetrics and Gynecology
  • Prenatal Diagnosis
  • Medical Genetics

Background:

  • Prenatal diagnosis is crucial for identifying fetal genetic abnormalities.
  • Chorionic villi sampling (CVS) offers early genetic information.
  • Transabdominal CVS is an established but continually refined technique.

Purpose of the Study:

  • To evaluate the success rate and safety of transabdominal CVS in the first and second trimesters.
  • To assess the feasibility of direct karyotyping from chorionic villi samples.
  • To determine the method's practicality for routine prenatal diagnosis.

Main Methods:

  • Transabdominal CVS was performed on 40 pregnant patients.
  • A double and subsequently single needle technique was employed.

Related Experiment Videos

  • Direct method karyotyping was attempted on collected villus tissue.

    • Main Results:

    • The overall success rate for transabdominal CVS was 97.5%.
    • No immediate maternal or fetal complications were reported.
    • Direct karyotyping yielded successful results in 75% of samples.
    • This demonstrates the viability of cytogenetic analysis from first and second-trimester villi.

    Conclusions:

    • Transabdominal CVS is a safe, simple, and rapid method for prenatal diagnosis.
    • The procedure is feasible for obtaining samples for cytogenetic analysis in early pregnancy.
    • It presents a potentially lower risk profile for fetal and maternal complications.