Frozen embryos and blastocysts: which is more suitable for IVF transplantation?
Test tube baby transplantation is an important method to help infertile couples achieve fertility. In the process of IVF, embryo selection is a key link. At present, frozen embryos and blastocysts are common choices. So, what are the characteristics of frozen embryos and blastocysts? Which is more suitable for IVF? This article will elaborate from four aspects: embryo survival rate, transfer success rate, survival rate and fertility results.
Embryo survival rate
First, let's look at the survival rate of embryos. Frozen embryos are collected after hormone treatment and cryopreserved after a series of treatment. The advantage is that frozen embryos can be stored for a long time without worrying about the survival rate of embryos. Blastocyst is an early embryo formed on the fifth or sixth day after in vitro fertilization and culture. In contrast, the survival rate of blastocysts is relatively high, because only well developed and healthy embryos can develop to the blastocyst stage.
Secondly, blastocysts are also better than frozen embryos in quality inspection before transplantation. As the blastocyst develops to the fifth or sixth day, the embryo can form the blastocyst cavity and the endoid state, which can more accurately assess the quality and potential of the embryo and help doctors select the embryo with the most development potential.
In conclusion, from the perspective of embryo survival rate and quality testing, blastocysts are more suitable for IVF.
Transplantation success rate
Frozen embryos and blastocysts also differ in the success rate of transplantation. The success rate of frozen embryos is affected by the freezing process. In the process of thawing and transplantation, there is a certain risk that the survival rate of embryos will be reduced. The blastocyst has been screened out in the process of culture and selection, and its survival rate and transfer success rate are relatively high.
In addition, another advantage of blastocyst transfer is selective doubling. The blastocyst will naturally double in culture, and the number of embryos will increase. In this way, transplanting multiple blastocysts will increase the pregnancy success rate of female patients.
In conclusion, considering the success rate and selective doubling of transplantation, blastocysts are more suitable for IVF transplantation.
Survival rate
Survival rate refers to the probability of continued development and survival after embryo transfer. Frozen embryos may be damaged by freezing during thawing and transplantation, so their survival rate is relatively low. However, when blastocysts are transferred, they first need to go through a series of cultivation and screening processes. Only well-developed embryos that reach the blastocyst stage will be selected for transfer, so their survival rate is relatively high.
In conclusion, from the perspective of survival rate, blastocysts are more suitable for IVF transplantation.
Fertility outcome
Finally, let's look at fertility results. Selective doubling of blastocysts can increase the pregnancy success rate of female patients, thus improving the fertility. In addition, the quality and potential assessment of blastocysts is more accurate, which helps to improve the implantation rate of embryos and the rate of live births.
In conclusion, from the perspective of fertility results, blastocysts are more suitable for IVF transplantation.
Summary
Based on the above discussion, blastocysts are more suitable for IVF in terms of embryo survival rate, transfer success rate, survival rate and fertility results. Due to more accurate quality inspection and selective doubling of blastocysts before transplantation, their survival rate and transplantation success rate are relatively high. In the process of IVF, the selection of blastocysts can improve the survival rate of embryos and fertility results, and provide better help for infertile couples to realize their reproductive dreams.
