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Blastocyst Culture and Transfer in Delhi

What is Blastocyst?

The blastocyst is a stage in the early developmentBlastocyst of mammals and humans. It consists of an outer layer of cells trophoectoderm and an inner cell mass. The outer layer contributes to the formation of placenta and the inner cell mass gives rise to the body of the embryo.

Normally the embryos formed in the laboratory are transferred to the uterus on day three, for implantation and further development. In some cases, the embryos have to be cultured up to day five-six.

Advantages of Blastocyst Culture:

  • This procedure ensures the quality of the embryos as only, good quality embryos survive to the blastocyst stage of development. This allows single embryo transfer if required.

  • In an normal untreated cycle, the embryos reach the uterus on day six. So it is close to the normal stage of implantation and the uterus is physiologically ready to receive the embryo, so the success rates are good. This procedure is especially good for cases of repeated implantation failure.

  • The procedure also helps to screen the embryos for genetic abnormalities. In such cases, the embryo biopsy is done on day two and the embryos allowed growing. The embryos are transferred on day five if they are normal. It ensures transfer of good quality embryos in IVF procedure.

Disadvantages of Blastocyst Culture:

  • If the embryo number is less, it is possible that embryo growth may be arrested and no blastocyst forms. In such cases, there may be no embryos to transfer.
  • There is a higher chance of identical twins due to splitting of the blastocyst.