A number of Ballarat IVF patients will have had the experience of having an Egg Collection, and then having all of the healthy embryos formed frozen, rather than having a fresh embryo transfer. There are a number of possible reasons for having this treatment step, all of which are based on maintaining the health of the mother to be, and maximising the likelihood of a pregnancy with a healthy baby.
The first reason to" freeze all" is when the woman is at risk of hyperstimulation.
In this situation, most women will have been given a syneral trigger, and provided they don’t conceive the risk of hyperstimulation is very small.
The second reason to "freeze all" is if a woman's progesterone level is elevated at the time of triggering in preparation for egg collection. In general, the lower the progesterone level is prior to egg collection the better, but the younger you are, and the better you respond to FSH, the less important it is. Your fertility nurse and your Ballarat IVF specialists will discuss your progesterone level & advice regarding the need or otherwise to "freeze all".
Finally, there are some women who require maximal dose FSH, and despite all efforts they don’t conceive. These women may also benefit from a freeze all cycle and planned frozen embryo transfer.
The disadvantage of a freeze all cycle is the delay in conceiving. Ballarat IVF data shows that on average it takes 3 extra months to get to the same cumulative pregnancy rate from a cycle compared to having a fresh transfer. However, after 4 months, the cumulative pregnancy rates are the same. The reason for the lag is that women often take a couple of months' break before coming back for their frozen Embryo transfer.
It is important to note that the Ballarat IVF fresh and frozen embryo transfer pregnancy rates are essentially identical, so apart from the delay in getting pregnant, the pregnancy rates with frozen embryos are excellent. A further benefit from frozen embryo transfer is that the likelihood of having a healthy baby is exactly the same as naturally conceived babies.
Ballarat IVF Specialists share the vision that in the not too distant future, the majority of IVF stimulation cycles will have all embryos frozen, and a single, high quality thawed embryo will be transferred shortly afterwards. This will generate high pregnancy rates in women at no risk of hyperstimulation, and result in greater numbers of healthy babies being born.
~Dr Russell Dalton