In vitro transfer, why is the success of blastocysts not high

The success rate of IVF blastocyst transfer: experts introduce that the clinical pregnancy rate of blastocyst transfer is generally higher, but all embryos may not necessarily be cultured into blastocysts, and some embryos must be eliminated, so the final success rate is not much different. For some patients with recurrent infertility, culture blastocyst transfer may be considered.

IVF Blastocyst Transfer Advantages:

1.Verify the developmental potential of the embryo: whether the embryo can develop to the blastocyst is related to its own genes, when the embryo has no developmental potential or carries abnormal chromosomes and genes, it can be naturally eliminated due to its own abnormal development in the process of extended culture.

Only the best quality embryos can develop into blastocysts.

2.Embryonic development is more synchronized with the endometrium: blastocyst stage transfer provides a natural environment closer to reproductive physiology and has a higher implantation capacity.

3.Reduces the risk of multiple pregnancies: The number of embryos transferred can be reduced due to the high implantation rate of blastocyst transfers. If it is a high-quality blastocyst, a single blastocyst transfer is advocated, which can reduce the rate of multiple pregnancy.

There is no doubt that blastocyst transfer has a higher implantation rate than normal embryos because the blastocyst grade is better and the development is faster.

But it does not mean that this will definitely implant and may survive in the womb, after all, the uterus is the best survival of the embryo and the rooted environment.

Then the transfer of two blastocysts, whether the two implant or not just means that the probability is the same, but the chance of conceiving a single child will be higher than the probability of implantation of both of them.

Which one should be transferred in 1 blastocyst and 2 frozen embryo test tubes? Couples are worried and don't know how to choose.

If the embryo is frozen and the blastocyst is compared, the success rate of the blastocyst is higher than that of the frozen embryo. But if you put 2 frozen embryos and only 1 blastocyst now, it is really difficult to compare which has a higher success rate.

Hello, it is important to note that even if the process of egg retrieval, egg receiving, sperm formation, and embryo formation is successful, there may be problems at the time of implantation. In fact, the technology of IVF is relatively OK now, and the success rate of choosing a regular and powerful hospital for this kind of surgery is still possible.

Malaysia: The cost of medical treatment is about 6-80,000 yuan.

Because it is easier to survive and the blastocyst is easier to survive, it is easier to succeed.

Because the technology is now more developed and the technology is more advanced, the possibility of IVF failure is reduced, and the success rate is improved.

In general, the chance of a natural pregnancy per month for a couple of normal childbearing age is no more than 20%. In layman's terms. That is to say, it is not something that every couple can easily get if they want a baby every month.

Similarly, "IVF" is not successful in every cycle. The success rate of IVF in the world is about 30%, and the overall success rate in China will be lower, but the success rate will be higher than 30% in a small number of mature and standardized centers.

IVF embryo transfer time, fertilized eggs in vitro culture for 48-72 hours can develop to 8 16-cell stage embryos. At present, embryos are transferred 2 to 3 days after fertilization, and the embryo transfer time is delayed, the higher the requirements for in vitro culture, but it is more in line with the physiology of pregnancy.

In view of the many uncertain risks associated with IVF, IVF technology should not be abused, let alone used as a means to have multiple births. For families who are unable to conceive naturally, they must choose a regular and qualified hospital for IVF, and strive to minimize the danger.

Factors influencing the success of embryo transfer.

1. The woman's age plays a vital role. Generally speaking, even if the man is fifty or sixty years old, the impact on fertility is not obvious, but it is not so good for the woman. As the woman ages, fertility declines gradually, accelerates significantly after the age of 35, and is completely lost after menopause, and this process is irreversible.

At present, there is no drug that can "rejuvenate" a woman's fertility.

2. Ovarian function refers to the responsiveness of the ovaries to ovulation induction drugs. The worse the ovarian function, the fewer eggs obtained and the worse the quality of the eggs, the lower the pregnancy rate and the higher the miscarriage rate. Ovarian function is related to differences between individuals, in addition to age.

3. Hydrosalpinx is also a serious cause of infertility, and if a patient with hydrosalpinx wishes to conceive a test-tube baby, the pregnancy rate is lower than that of a person without hydrosalpinx, and the incidence of miscarriage and ectopic pregnancy will be greatly increased. The literature shows that hydrosalpinx reduces the pregnancy rate and implantation rate of IVF by 50%, and increases the miscarriage rate by 2 times.

4. That is to say, if the success rate of IVF is 20% to 30%, if there is hydrosalpinx, the success rate will be 10% 15%, coupled with the increase in the miscarriage rate, so it is very important to say that before IVF, hydrosalpinx is very important.

Because the condition of the fetus will be more stable at this time, it can greatly reduce the risk of accidents, and it can also keep the fetus in a very good state.

It is because such embryos are generally relatively completely developed, and the medical environment and medical technology in our country are constantly improving, so the success rate is relatively high.