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. 2009 Aug;26(8):437-41.
doi: 10.1007/s10815-009-9342-6. Epub 2009 Sep 30.

The influence of early cleavage on embryo developmental potential and IVF/ICSI outcome

Jing Fu  1 , Xian-Jing Wang, Yong-Wei Wang, Jian Sun, Kristina Gemzell-Danielsson, Xiao-Xi Sun
Affiliations

The influence of early cleavage on embryo developmental potential and IVF/ICSI outcome

Jing Fu et al. J Assist Reprod Genet. 2009 Aug.

Abstract

Purpose: To observe whether early cleavage can be a predictor of embryo developmental potential, pregnancy and implantation rates.

Methods: A total of 9,544 embryos in 1,095 in vitro fertilization or intracytoplasmic sperm injection cycles were observed with regard to the appearance of early cleavage at 25-29 h post-insemination.

Results: A significantly higher proportion of excellent quality embryos were observed in the early cleavage group compared to the late cleavage group (52.5 versus 28.9%, P < 0.01). In the early cleavage group there was also a higher rate of pregnancy per transfer compared with the late cleavage group (38.7 versus 26.3%, P < 0.01). In addition, we found that transfer of only one early cleavage embryo resulted in a high pregnancy rate (38.5%) and a low multiple pregnancy rate (18.0%).

Conclusion: Early cleavage is a strong indicator of embryo quality, and may be used as an additional criterion in the selection of embryos for transfer to increase pregnancy rate and reduce multiple pregnancy rate.

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