Frozen Embryo Transfer

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Frozen Embryo Transfer

In an in vitro fertilization (IVF) treatment cycle, any additional suitable embryos not transferred during your cycle can be frozen or ‘vitrified’, using an ultra-rapid freezing technique, for transfer in subsequent treatments.

In some situations, all of your suitable embryos may be vitrified with none being transferred. The vitrification of embryos at FTFC has proven to have no significant effect on the ability of an embryo to implant and result in a pregnancy once thawed.

The ability of the embryo to implant in a non-stimulated endometrium is thought to be improved.

Frozen Embryo Transfer
Frozen Embryo Transfer

Advantages of freezing embryos

The likelihood of pregnancy in any treatment cycle is determined directly by the number and quality of embryos transferred. However, increasing the number of embryos transferred must be balanced by a corresponding likelihood of multiple pregnancy (twins and triplets).

Multiple pregnancy is considered a significant medical risk and FTFC has improved embryo quality to a point where acceptable pregnancy rates are obtained by transfer of a single embryo.

As more suitable embryos than is safe to transfer are usually available in each IVF cycle, the vitrification of additional suitable embryos (that have not been transferred) affords a greater opportunity for pregnancy from each egg collection.

Therefore, if multiple viable embryos result from an IVF cycle, our fertility specialist might suggest transferring one or two of them and vitrifying any additional suitable embryos. The vitrified embryos may remain in storage indefinitely without harm and are available for thaw and transfer subsequently without the need to undergo further ovarian stimulation.

If your fertility is at risk due to ovary-damaging cancer treatment then embryo vitrification allows you to preserve your fertility.

If your current cycle is unsuccessful or you decide later that you would like to try for another baby, the frozen embryos are able to be thawed and transferred without you having to undergo another egg collection procedure.

At Footsteps To Fertility, a large number of births, over many years, have come from the transfer of frozen embryos. Success rates depend, among other factors, on the age of the woman when eggs are collected and inseminated and the resultant embryos are frozen.

Therefore, if a 42-year-old woman uses frozen embryos created when she was 38, her chance of pregnancy from those embryos will be that of a 38-year-old woman.

Why freeze all embryos in an IVF cycle?

Improving embryo implantation

With effective stimulation and embryo culturing methods there may be more embryos from each treatment cycle available for a future transfer. These excess embryos are cryopreserved for use in subsequent treatment where there has been no ovarian stimulation.

Avoiding ovarian hyperstimulation syndrome (OHSS)

If you have developed a lot of follicles during your stimulated IVF treatment your fertility specialist may recommend a freeze-all embryo cycle. This is to avoid the risk of developing ovarian hyperstimulation syndrome (OHSS) which is a potentially dangerous condition that may worsen if you were to become pregnant.

By freezing all the embryos and transferring them at a later date when the ovaries are no longer stimulated, it reduces the chances of this condition occurring.

At Footsteps To Fertility, we use techniques that help patients achieve their dream of parenthood. We are changing the lives of couples struggling with infertility. Feel free to contact us or reserve an appointment below.

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