IVF

An important aspect of any assisted reproduction technique is the transfer of the developing embryo(s) to the uterus.It is an extremely sensitive step that plays a significant role in the success of a pregnancy.

Embryo Transfer Highlights:

  • The best embryos are selected for transfer, after a few days of development in external culture media
  • The number of embryos selected for transfer influences the pregnancy rate and chances of a multiple pregnancy.

Process of Embryo Transfer:

  • After fertilization in external culture media takes place, the embryos are allowed to develop.
  • After 3-5 days of development, the best embryos are selected
  • Using a fine tube called a catheter, 1-2 embryos are loaded into the catheter and deposited into the uterine cavity with a small amount of fluid under ultrasound guidance.

In some countries the maximum number of embryos transferred is established by the local legislation. As a general recommendation, it is advisable not to exceed two.

Information that is shared with the patient (according to ESHRE):

  • Batch number and type of media used for transfer
  • Time from oocyte retrieval to transfer
  • Time from oocyte insemination to transfer
  • The number and developmental stage of embryos at transfer
  • Fate of excess embryos
  • Type of catheter used for transfer

The most important aspect of embryo transfer is to maintain the perfect conditions during the transfer process to maintain the health and environment of the embryo(s). Hence, arrangements are made to maintain the ideal temperature and pH while culturing and transporting the embryos.

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