Answer from: Aleksandr Darii, MD
People often wonder what to choose – embryo transfer in the cryo cycle, grow the embryos, freeze them and then gradually transfer them in the subsequent cycles? Or fresh embryo transfer, without freezing, right after the stimulation cycle when we collect the eggs. It’s a serious matter and each time, in each program, the decision should be taken individually for each patient.
In a stimulated fresh cycle with normal hormonal background, we can try to transfer 1-2 embryos. As for the stimulated cycles where progesterone rises, then, in these cases, it is preferable to freeze the embryos and then transfer them in cryo protocols.
There are other programs in our clinic called natural cycle IVF where cryo protocols are not implemented and are always carried out only with fresh embryos in the cycle when eggs are collected. Here everything happens naturally and there is no need to freeze the embryos. The cycle is natural, the hormonal background is natural and there is no need and benefit in embryo freezing and subsequent transfers. I would even say that such approaches are detrimental. And, once again, this is a very individual matter each time. The individual decision should be made by the doctor, together with the patient, per each individual patient, per each cycle and different hormonal backgrounds.
Should I choose frozen of fresh embryo transfer?
A frozen embryo transfer (FET) is a type of IVF treatment where frozen (cryopreserved) embryos created in an IVF cycle are thawed and transferred to the patient’s uterus. FET typically uses the embryos that remained from a previous IVF cycle. On the other hand, fresh embryo transfer involves transferring fresh embryos several days after the egg retrieval, without the need to freeze them. Which option is better? What are the differences and benefits?
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