BLASTOCYST CULTURE / TRANSFER vs.EMBRYO TRANSFER

• Opportunity to reduce high-order multiple birth

• Pregnancy rate probably not increased

  • Limited number of patients with sufficient day 3 embryos to culture
  • Culture success rate 30% - 60%

• Should all embryos be grown to blastocysts--NO

• Variability in blastocyst culture success

• Lower pregnancy rates with frozen/thaw blastocysts

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