01-07-2007
Recurrent implantation failure: definition
Published in: Journal of Assisted Reproduction and Genetics | Issue 7/2007
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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 ≥8, 8-cell stage embryos or ≥5 blastocyst embryos.