Traditionally, the embryos that will be transferred have been selected based on cell division of the develping embryo, on equal size of the cells and on the rate of fragmentation. According to the past experience of our doctors and biologists, other evaluation criteria can also be used when selecting the embryos. These new bases for evaluation have given promising results when trying to select the one embryo which stands the greatest chance to develop and implant itself into the uterine cavity. Co-culture, which means embryo cultivation at least until day five, the blastocyst stage, also increases the probability for a better embryo selection for implantation. This technique is available at our clinic. Pre-implantational genetic diagnosis also improves embryo selection, especially for couples with a history of repetitive implantation failure.
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A hatching embryo prior to implantation into the uterine mucosa.
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