Russian IVF institutions: for some families who choose IVF, they may have the idea of "double happiness" and "double perfection of children" at the beginning. They hope that IVF treatment can not only solve the problem of infertility, but also solve it once without worrying about childbearing. But IVF experts don't think so. They say that the current trend of IVF is singleton. Transplantation, because multiple pregnancy should be considered as a complication.
According to mhtc, the pregnancy is passed smoothly. At the time of delivery, multiple births tend to overload the mother's uterus, and the cervix is easy to open early. The chance of premature delivery is four times higher than that of singleton. The fetus often has problems such as dyspnea, cerebral hemorrhage, necrotizing enteritis, etc. the mortality rate is significantly higher than that of singleton transplantation.
However, in the actual situation, some doctors still consider the problem of implantation rate, and suggest that some in vitro pregnant mothers transfer more than one embryo. If these pregnant mothers receive the reduction operation later, will it have an impact? Data statistics show that after the reduction operation, the fetus is born at an average of 35 to 39 weeks, almost full-term, while the pregnancy period of pregnant women who do not receive the reduction operation will be shortened, and the baby will be raised. Born two to seven weeks early.
Generally speaking, doctors will perform fetal reduction operation for pregnant women before the 24th week of pregnancy according to the growth condition and operation risk of multiple births. During the 11th to 13th weeks of pregnancy, the fetus with abnormal chromosome or slow growth can be screened out through ultrasonic examination. If the fetus grows in an independent placenta, it can be injected directly into the belly of pregnant women to stop the growth of the fetus. If multiple births belong to the common placenta, The cord blood flow of one fetus needs to be interrupted by radiofrequency or conductance ablation technology. These two methods make the fetus die instantly and contract. When the mother is in labor, the dead fetus will be discharged from the body at the same time.
However, fetal reduction is not an all-around solution. According to international literature, women's uterus may be stimulated and contracted by the operation, with a half chance of miscarriage, that is, all fetuses are unfortunately stillborn.
It is necessary to balance the risk before the test tube pregnant women accept the reduction of fetus. The older pregnant women tend to accept the reduction of fetus due to the more likely occurrence of pregnancy toxemia and diabetes complications. There are also pregnant women who want to reduce their fetus, because the sharing of placenta and umbilical cord is too short, so there is not enough place for the reduction of fetus operation, and they have no choice but to abandon it. So we say that the single embryo transplantation is more safe and worthy of promotion.