Russian IVF Expense: What's the reason for the sudden disappearance of twins in vitro babies? The technology of IVF has created lovely babies in infertility families, so that everyone can successfully fulfill their own hope of pregnancy. To promote pregnancy in vitro, we believe that we will encounter a variety of problems. For example, what is the sudden disappearance of twins in vitro babies? Xiaobian takes you to know about it.
In vitro fertilization (IVF) and embryo transfer (ET) are commonly known as in vitro fertilization (IVF) and embryo transfer (ET). It is a process in which the eggs and sperm are taken out separately, fertilized in culture medium, and then transferred back to the mother's uterus to develop into a fetus.
1. Umbilical cord factors. According to MHTC, umbilical cord development abnormalities, such as umbilical cord over-twisting, narrowing, twisting, true knot, single umbilical artery, etc., result in obstruction of umbilical cord blood flow; or sail placenta, cause fetal placenta circulation disorder leading to intrauterine fetal death.
2. Placental factors. Preeclampsia causes placental ischemia, hypoxia, infarction, placental abruption; placenta previa; racket placenta, etc.
3. Fetal malformations. The incidence of twin malformations is twice that of singletons, such as severe congenital heart disease, fetal neoplasms, nervous system malformations, etc.
Twin disappearance syndrome usually occurs within 12 weeks of gestation. The dead foetus sac can be absorbed by autolysis and has no obvious adverse effect on the other live fetus and the mother. But if one fetus dies after 3 months of gestation, the necrotic tissue of the fetus degenerates and the tissue thromboplastin released by the placenta can reach the surviving fetus through blood vessels. Diffuse thrombosis, or the possibility of intravascular coagulation in the mother. The greater the gestational age of stillborn fetus, the higher the risk of onset. Maternal and fetal conditions must be closely monitored, including coagulation function monitoring and fetal intrauterine monitoring. http://www.sdxyer.com/