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Transcervical chorionic villus sampling: a practical guide.

Iosifina Stergiotou1, Virginia Borobio1, Mar Bennasar1

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The Journal of Maternal-Fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
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PubMed
Summary
This summary is machine-generated.

First trimester screening for fetal aneuploidies relies on chorionic villus sampling (CVS). This study proposes practical clinical guidelines for the transcervical CVS approach, ensuring sample quality and comparable safety to other methods.

Keywords:
Aneuploidychorionic villus samplinggenetic testingpractical guideprenatal diagnosis

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Area of Science:

  • Maternal-Fetal Medicine
  • Prenatal Diagnostics
  • Genetics

Background:

  • First trimester screening for fetal aneuploidies necessitates reliable diagnostic techniques.
  • Chorionic villus sampling (CVS) is the primary method for obtaining fetal tissue in early pregnancy.
  • Both transcervical and transabdominal CVS approaches exist, with selection historically based on various factors.

Purpose of the Study:

  • To address the lack of consensus on transcervical CVS technique and clinical guidelines.
  • To propose a practical clinical guideline for transcervical CVS based on institutional expertise.
  • To ensure high-quality sample acquisition and maintain a low fetal loss rate.

Main Methods:

  • Development of specialized expertise in the transcervical CVS approach.
  • Application of transcervical CVS for chorionic villi retrieval.
  • Comparative analysis of sample quality and fetal loss rates with other CVS methods.

Main Results:

  • Achieved high-quality chorionic villi samples via the transcervical route.
  • Demonstrated a fetal loss rate comparable to other CVS approaches.
  • Established a foundation for standardized transcervical CVS procedures.

Conclusions:

  • Transcervical CVS is a viable and effective method for first-trimester prenatal diagnosis.
  • A practical clinical guideline can optimize transcervical CVS performance.
  • Further standardization of transcervical CVS techniques is warranted.