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J Assist Reprod Genet. 2007 Jul;24(7):284-7. Epub 2007 Aug 3.

Recurrent implantation failure: definition.

Author information

1
Division of Reproductive Endocrinology and Infertility, Evanston Northwestern Healthcare, Evanston, IL, USA. jsrinehart@aol.com

Abstract

PURPOSE:

An attempt to define recurrent implantation failure.

METHODS:

Literature review.

RESULTS:

Numerous definitions of recurrent implantation failure exist. The complexity and redundancy of the process of implantation makes a single definition difficult to determine.

CONCLUSION:

Each center must establish a definition of recurrent implantation failure based upon the data from that center. The definition of RIF used in our program requires the transfer of > or = 8, 8-cell stage embryos or > or = 5 blastocyst embryos.

PMID:
17674185
PMCID:
PMC3455006
DOI:
10.1007/s10815-007-9147-4
[Indexed for MEDLINE]
Free PMC Article

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