One of the factors that most influences the results of in vitro fertilisation (IVF) treatments is the quality of the embryos.
Thanks to advances in cryopreservation, we can now vitrify (freeze) embryos without altering their quality.
Therefore, if the embryos are of good quality, the results of vitrified embryo transfer (VET) are practically the same as if we transfer fresh embryos from a second ovarian stimulation.
However, it must be considered that it is much more comfortable for the patient to transfer frozen embryos than to have to undergo ovarian stimulation and follicular puncture again. For this reason, it is most common to transfer all the cryopreserved embryos before starting another ovarian stimulation cycle.
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