Couples of childbearing potential use IVF technology** infertility, which requires in vitro fertilization and embryo culture for transfer. The transfer procedure, which takes place 3-5 days after egg retrieval, is called fresh embryo transfer. However, not everyone is suitable for transferring fresh embryos, and some people need to cancel the transfer temporarily. So, under what circumstances is it not advisable to transfer fresh embryos in vitro?
In what cases is it not recommended to transfer fresh embryos in vitro?
During the IVF process, usually 3-5 days after egg retrieval, IVF can be cultured into cleavage or blastocysts and optionally transfer cleavages or blastocysts, which are referred to as fresh embryos. However, fresh embryo transfer needs to be canceled in the following cases:
1.If your ultrasound shows that your ovaries are large, have many follicles, and have obtained a lot of eggs during ovulation induction, in order to prevent you from developing ovarian hyperstimulation syndrome, your doctor will recommend that you cancel the fresh embryo transfer and transfer the embryos into the body after the ovarian function returns to normal.
2.When there is a large amount of fluid in your fallopian tubes, your doctor will recommend that you cancel the fresh embryo transfer and deal with the fluid buildup first. Because the effusion constantly flushes the uterine cavity and has a killing effect on the embryo, it reduces the probability of embryo implantation.
3.In addition, when the patient finds that the endometrium is too thick, or very thin, or even uneven echo during ovulation induction, and pathological changes in the endometrium cannot be ruled out, the doctor will recommend that you cancel the fresh embryo transfer.
4.If progesterone levels are very high before or in the morning of HCG Day (night acupuncture day), the fresh embryo transfer will also be canceled. Due to the early transformation of the endometrium, the development of the endometrium and the embryo on the day of transfer is not synchronized, and the implantation rate is reduced.