Selecting the 'best' embryos: prospects for improvement.

Area of Science:

• Reproductive Medicine
• Embryology
• Clinical Practice

Background:

• Embryo transfer is a critical step in assisted reproductive technology (ART).
• Current practices for embryo selection and transfer numbers warrant critical evaluation.
• The consequences of embryo selection methods impact pregnancy outcomes, particularly multiple gestations.

Purpose of the Study:

• To review the rationale and methods behind embryo selection for transfer.
• To analyze the outcomes associated with current embryo transfer practices.
• To identify areas for improvement in embryo selection and clinical decision-making.

Main Methods:

• Literature review of studies on embryo selection and transfer.
• Analysis of evidence regarding the effectiveness and consequences of current methods.
• Critical appraisal of clinical decision-making processes in ART.

Main Results:

• Current embryo selection techniques lack sufficient evidential support and scrutiny.
• Decisions on the number of embryos transferred should consider the probability of multiple pregnancies, not just the input number.
• Existing methods for selecting embryos and clinicians are suboptimal.

Conclusions:

• There is a need for more rigorous evidence supporting embryo selection methods.
• Clinical decisions regarding embryo transfer numbers must prioritize reducing multiple pregnancies.
• Enhanced methods for selecting both embryos and responsible clinicians are essential for improving ART outcomes.