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Title of Journal: J Assist Reprod Genet

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Abbravation: Journal of Assisted Reproduction and Genetics

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Springer US

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DOI

10.1016/0277-5379(90)90355-W

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ISSN

1573-7330

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The importance of the cleavage stage morphology ev

Authors: Daniela P A F Braga Amanda S Setti Rita C S Figueira Assumpto Iaconelli Edson Borges
Publish Date: 2014/06/04
Volume: 31, Issue: 8, Pages: 1105-1110
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Abstract

This study included 8444 embryos obtained from 1125 patients undergoing ICSI cycles between January/2011 and September/2013 The influence of the quality of the embryo on daystwo and three on blastocyst formation and implantation success was evaluated Moreover the implantation potential of lowquality embryos at cleavage stage transferred on daythree was compared with the implantation potential of lowquality embryos at cleavage stage transferred on dayfiveLowquality embryos on daytwo had an approximate 20  decreased chance of achieving the blastocyst stage and blastocysts derived from lowquality embryos on daytwo had a nearly 40  decrease in the implantation chance Lowquality embryos on daythree had a 30  decreased chance of achieving the blastocyst stage and blastocysts derived from lowquality embryos on daythree had an almost 40  decreased implantation chance The implantation rate didn’t differ when lowquality embryos on the cleavage stage were transferred on daythree or left in culture and transferred on dayfiveThe transfer of lowquality embryos on daythree is a better approach than transfer at the blastocyst stage In addition the embryo morphology evaluation at the cleavage stage is still needed for the selection of the embryo with the best implantation potential in extended embryo culture programmes

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  9. Fifteen year follow-up of embryos cryopreserved in cancer patients for fertility preservation
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  12. Chromosome distribution of early miscarriages with present or absent embryos: female predominance
  13. Derivation of human embryonic stem cell lines from single blastomeres of low-quality embryos by direct plating
  14. Evaluation of in vitro fertilization parameters and estrogen receptor alpha gene polymorphisms for women with unexplained infertility
  15. Effect of the size of zona pellucida opening by laser assisted hatching on clinical outcome of frozen cleaved embryos that were cultured to blastocyst after thawing in women with multiple implantation failures of embryo transfer: a retrospective study
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