We all know that IVF is mainly to fertilize eggs and sperm in vitro, and then through breeding, and then implanted into the female uterus, so as to achieve a technology of pregnancy, however, IVF technology does not seem to be complicated, but in fact, the requirements for the entire operation process are very strict and rigorous, once a certain link is wrong or wrong, the entire IVF operation may fail. Therefore, it is very necessary to do IVF and understand the entire process of IVF in advance.
Hengjian Overseas pointed out that IVF needs to pass the process of pre-examination, ovulation induction, egg retrieval, ivory fertilization, embryo transfer, hormone supplementation and follow-up observation of whether the embryo implants, etc. Each step has strict standards and requirements, the specific process is how it is, the following is the IVF process introduction.
1. Ovulation induction therapy
Since not every egg can be fertilized, not every fertilized egg can develop into a viable embryo, so multiple eggs must be obtained from the woman's body to ensure that there are embryos that can be transferred, which requires ovulation induction treatment for women.
2. Egg retrieval
Under the guidance of B ultrasound, the doctor applies a special egg retrieval needle to puncture the mature follicle through the yin channel and suck out the egg. Egg retrieval is usually performed under intravenous anesthesia, so women do not feel the pain caused by the puncture process.
3, IVF
Sperm retrieval: When a woman retrieves an egg, a male performs a sperm retrieval. After the semen undergoes a special washing process, the sperm eggs are placed in a special medium in order to combine naturally. This is called conventional fertilization.
4. Embryo transfer
A few days after fertilization, a very thin embryo transfer tube is applied, the best embryo is transferred into the mother's uterus through the cervix, and the number of embryos transferred is determined according to age, embryo quality and previous IVF outcomes, usually 2 to 3 embryos. In recent years, in order to reduce the rate of multiple pregnancies, some centers have opted for single embryo transfer, or up to 2 embryos.
5. Luteal support
Due to the use of GnRH agonists/antagonists and ovulation-stimulating drugs, as well as the loss of follicular granule cells due to egg retrieval, women often have luteal insufficiency during the egg retrieval cycle and require luteal supplementation/support with progesterone and/or chorionic gonadotropin. If you are not pregnant, stop progesterone and wait for menstruation. If pregnant, progesterone is continued, usually up to 3 weeks after ultrasound B sees fetal heartbeat.
6. Determination of pregnancy
Serum hCG is measured 14 days after embryo transfer to determine pregnancy. Serum HCG is measured again 21 days after embryo transfer to understand how the embryo is developing. 30 days after embryo transfer, a vaginal ultrasound is performed to determine whether there is an intrauterine pregnancy or not, with fetal heartbeat.
Hengjian overseas tips: The above are the process and steps of IVF, I believe that everyone will have a certain understanding of IVF technology after understanding the above content, patients who want to do IVF will understand these in advance, so that it is helpful to do IVF, and it is also convenient for patients to better cooperate with treatment, and finally in the IVF process, they can actively cooperate with the treatment and strive for early pregnancy.