IVF frozen fetal transfer is a process in which the embryos that can be transferred after ovulation induction are cultivated and screened, and then frozen and rescued after the endometrium reaches the standard of embryo implantation, and the frozen embryos are taken out to thaw and resuscitate and implanted into the uterine cavity. What are the steps of IVF frozen embryo transfer?
Frozen embryos are frozen and stored in -196 liquid nitrogen. This makes many people think that frozen embryo transfer may affect the quality of embryos and may reduce the success rate of IVF. Actually, no, frozen embryos will not hurt the embryos, nor will they affect the viability of the embryos, nor will they affect the quality of the embryos.
Steps to freeze embryos in vitro fertilization:
First: the endometrium.
First of all, frozen embryo transfer is to cryopreserve the cultivated embryos after stimulation, so the frozen embryos are transferred without ovulation induction, and the inner membrane can be thawed and transferred after direct inspection. There are currently two approaches to endometrium.
1. Natural cycle method: for women with regular menstruation and normal ovulation, transplantation should be carried out during ovulation, B ultrasound monitoring should be done before transplantation, and a series of examinations such as blood endocrine examination should be checked.
2. Hormone substitution method: women with irregular menstrual cycles and ovulation disorders should completely use drugs to promote the growth of the endometrium, and only after the morphological development of the endometrium reaches certain requirements can the embryos be resuscitated and transferred.
Second: thaw the embryos.
The most important step of frozen embryo transfer is to thaw the embryo, if the embryo is damaged in the thawing process, then the embryo cannot be used, so the laboratory environment and the operation level of the laboratory doctor are very high during the thawing process. It is generally recommended to go to an authoritative hospital for IVF.
Third: Embryo transfer.
After the embryos are thawed, they will be transferred, and at least 3 embryos need to be successfully transferred on the day of transfer. After the transfer, the woman needs to rest more, and the embryo implantation needs enough progesterone for the embryo implantation to develop, so progesterone needs to be ingested.
Fourth: Pregnancy test.
Generally, a blood test can be taken to determine whether the pregnancy is carried out 2 weeks after the embryo transfer, and if the pregnancy is confirmed, a B-ultrasound examination is required after 2 weeks.