Patients who undergo IVF fertility attach great importance to embryo transfer and have many questions. How many embryos are good for embryo transfer?This is a question that is frequently asked by patients. Many patients believe that the more transplants the better, and that this will increase the chances of a successful pregnancy, but what is the truth?Let's find out with IVF experts.
Experts pointed out that in the early stage, due to the lack of diagnosis and treatment level and culture conditions, the method of increasing the number of embryo transfers is often chosen to improve the probability of success, but with the continuous development and breakthrough, there is no need to do so.
At present, in our hospital, 1 or 2 embryos are usually transferred for patients. Before embryo transfer, the reproductive doctor will conduct a comprehensive assessment of the patient's physical condition, previous pregnancy history, embryo formation and the patient's uterine environment, and then decide whether to transfer 1 or 2 embryos, no more than 3 embryos, because too many embryos can easily cause multiple pregnancy, and multiple pregnancy has a great impact on the health and safety of the mother and baby.
For patients with a large number of embryos formed or who have had repeated implantation failures, blastocyst culture followed by blastocyst transfer is generally recommended.
Blastocysts are cultured in vitro until day 5-6, and during in vitro development, the embryos themselves will undergo a selection of survival of the fittest, and only embryos with good developmental potential can form blastocysts. In addition, the blastocyst develops more synchronously with the endometrium, so the chance of successful implantation after transplantation is relatively high.
At present, major reproductive centers also advocate single blastocyst transfer, which can not only ensure the pregnancy rate of IVF, but also reduce the risk of multiple pregnancy and ensure the health and safety of pregnant women and fetuses. However, whether a patient is suitable for blastocyst culture also needs to be determined by the number of embryos and their own condition.