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How much have we learned from time-lapse in clinical IVF?

D Castelló1, Y Motato2, N Basile3

  • 1IVF Laboratory, Instituto Valenciano de Infertilidad (IVI) , Valencia 46015, Spain damia.castello@ivi.es marcos.meseguer@ivi.es.

Molecular Human Reproduction
|September 21, 2016
PubMed
Summary

Time-lapse systems (TLS) show potential for selecting the best embryo for transfer in assisted reproductive technology (ART). However, more research is needed to confirm benefits like live birth rates compared to conventional incubation.

Keywords:
ARTembryo assessmentembryo developmentmorphokinetic parametersnon-invasive markerstime-lapse system

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Area of Science:

  • Reproductive Medicine
  • Embryology
  • Biotechnology

Background:

  • Time-lapse systems (TLS) are increasingly used in assisted reproductive technology (ART) for embryo evaluation.
  • Existing research on TLS effectiveness for embryo selection shows mixed results.
  • Variability in study populations and methodologies complicates comparisons between TLS and conventional incubation.

Purpose of the Study:

  • To review and synthesize current evidence on the efficacy of TLS for embryo incubation and selection.
  • To compare the outcomes of TLS with conventional embryo culture methods.
  • To identify research gaps regarding TLS and key reproductive endpoints.

Main Methods:

  • A comprehensive literature search of PubMed was conducted.
  • Studies focusing on TLS in embryo incubation and selection were retrieved.
  • Evidence was analyzed to compare TLS with standard embryo culture and evaluation techniques.

Main Results:

  • While TLS offers novel insights into embryo development kinetics, conclusive evidence supporting its superiority over conventional methods is limited.
  • Many studies focus on intermediate endpoints like blastocyst formation, with less data on live birth rates, miscarriage, or stillbirth.
  • Significant heterogeneity exists in study designs, patient demographics, and culture conditions, impacting result interpretation.

Conclusions:

  • Further high-quality research is necessary to establish the definitive benefits of TLS for embryo selection.
  • Comprehensive data on live birth rates, twinning, and infant health are crucial for clinical decision-making.
  • Standardization of study protocols and reporting is needed to improve evidence quality in TLS research.