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Blastocyst Transfer

Blastocyst Transfer is embryo transfer procedure used in IVF. This type of transfer is commonly used in fertility centers. a blastocyst embryo is transferred into uterus of female where it will hopefully implant and develop into a fetus. It is now becoming a popular option to day3 embryo transfer.

What is a Blastocyst?

A blastocyst is formed when an embryo reaches the five day development stage. At this point in development, the embryo has between 60 and 100 cells distributed in two areas: an outer embryo lining (which will later form the placenta), and an inner mass (which will later become the fetus). During a natural cycle, the embryo develops into the blastocyst stage as it is leaving the fallopian tubes and entering the uterus. An embryo needs to have entered into the blastocyst stage once it arrives in the uterus to ensure proper implantation.

Not all embryos are enough to reach the blastocyst stage of development; in fact, approximately 50% of all embryos die soon after the third day of development. By holding transfer off until the blastocyst stage, embryologist will be better able to ensure that your embryos are good and capable of further development.

In blastocyst transfer, it is likely that only one or two of your embryos will be transferred into uterus. Fewer embryos are required for this type of transfer because blastocyst embryos are more likely to implant and develop than Day 3 embryo.

Blastocyst transfer is considered a more "natural" type of transfer as compare to Day 2/ Day 3 transfer procedure.

Higher Success Rates

Blastocyst embryo transfers have also been associated with better IVF success rates. By allowing embryos to culture for a longer period of time, embryologists are better able to choose good embryos to transfer into uterus.

Who should go for blastocyst Transfer?

Repeated faied cycle with day2/day3 transfers..

Relatively small number of embryos available for transfer.

Need to avoid having a multiple pregnancy for health reasons.

Drawbacks of Blastocyst Transfer:

Blastocyst culture is very difficult to do and requires a fully-equipped laboratory and intensive management. In order to survive the culture process, embryos need to be kept at specific temperatures and exposed to just the right culture medium.

Choose to have a blastocyst transfer, expect to lose quite a few of your embryos. On average, up to 50% of embryos die before the blastocyst stage, but some couples lose more than half of their embryos.