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In Vitro Fertilization01:24

In Vitro Fertilization

In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...

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[Elective single embryo transfer - the Scandinavian experiment].

I Galeraud-Denis1, C Denoual-Ziad, C Muris-Guillou

  • 1Unité de Biologie, Centre d'assistance Médicale à la Procréation, 14033 Caen cedex, France. denis-i@chu-caen.fr

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|October 28, 2008
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Summary
This summary is machine-generated.

Reducing embryo transfers to two still results in high twin rates. Elective single embryo transfer (eSET) effectively minimizes twins but may lower live birth rates, requiring careful patient selection and optimized protocols.

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Area of Science:

  • Reproductive Medicine
  • In Vitro Fertilization (IVF)
  • Maternal-Fetal Medicine

Context:

  • Multiple pregnancies carry significant maternal, neonatal, and psychological risks.
  • Elective single embryo transfer (eSET) emerged as a strategy to mitigate these risks.
  • Previous studies focused on selected IVF populations.

Purpose:

  • To evaluate the effectiveness of eSET versus double embryo transfer (DET) in reducing twin pregnancies.
  • To analyze the impact of eSET on live birth rates.
  • To discuss the extension of eSET to unselected patient populations.

Summary:

  • Transferring two embryos does not significantly decrease twin pregnancy rates (21-40%).
  • eSET has shown success in nearly eliminating twins in selected groups, though live birth rates require optimization.
  • Factors like patient age and embryo quality influence eSET success.
  • Extending eSET to unselected populations remains debated, balancing twin reduction against overall pregnancy rates.

Impact:

  • eSET offers a pathway to significantly reduce multiple births and associated complications.
  • Optimizing eSET requires integrating embryo freezing and identifying predictive factors for success.
  • The decision to implement eSET broadly necessitates a societal consensus on acceptable twin pregnancy rates versus overall IVF success rates.