Embryo transfer is one of the most important stages of In Vitro Fertilisation process. It is a crucial phase of the treatment in which the result can determine the success or not of the IVF. Everyday reproduction medicine reveals new advances and recent studies established that In Vitro Fertilisation results can be improved when frozen embryos are transferred to instead of fresh embryo mainly for the difference in endometrial preparation.
Do frozen embryos offer better results in IVF?
Using frozen embryos in IVF process can be beneficial. The main explanation is that during embryo transfer with frozen gametes endometrial preparation is performed with estradiol and progesterone and its development can be controlled more accurately from fresh embryos transfer.
Barcelona Universidad Autónoma completed a study in which they analyzed information about the results on the use of IVF assisted reproduction techniques. The study concluded declaring that frozen embryo transfer increased by 32% and the possibility of carrying on a pregnancy plus 31% to achieve a clinic pregnancy, compared to fresh embryo transfer.
In these techniques success rates increase and is possible thanks to the advances of vitrification and new freezing methods, in this way fresh and frozen embryos survival rates have been equalized. With the traditional freezing method the survival rate of frozen embryos was lower.
However, it is worth mentioning that the use of frozen embryos also has cons and not only pros. First of all it is a more expensive method, particularly the freezing embryo process. The waiting time of frozen embryo techniques is longer, but in return the woman doesn’t have to undergo such a strong hormone treatment.
