Several Methods of IVF Substitution
Test tube baby is a kind of reproduction method that uses artificial assisted reproduction technology to culture the fertilized eggs to the embryonic stage, and then transfer the embryos to the mother's uterus. In the process of IVF surrogate pregnancy, there are several common ways, they are: in vitro fertilization embryo transfer pregnancy, egg donation embryo transfer pregnancy, pregnancy and natural return of embryos in vitro.
1. In vitro fertilization embryo transfer pregnancy
In vitro fertilization embryo transfer (IVF-ET) pregnancy is the most commonly used method of IVF surrogate pregnancy. This method usually includes the following steps: first, take out the female eggs and combine them with the male sperm in the laboratory for in vitro fertilization. The fertilized egg will be cultured in the culture dish until it develops to the embryonic stage. Then, the well developed embryo is transferred into the uterus of a woman, so that it can continue to develop into a baby.
The success rate of IVF-ET pregnancy usually depends on many factors, including the age of women, the quality of eggs and sperm, etc. This method is available in maternity hospitals and reproductive medical centers all over the country.
2. Egg donation - embryo transfer pregnancy
Egg donation - embryo transfer pregnancy is an option for women who cannot conceive naturally or whose eggs are of poor quality. In this method, a woman donates her eggs anonymously or openly. The eggs will be fertilized in vitro with the male sperm, and the resulting fertilized eggs will be transplanted into the mother's uterus.
The success rate of egg donation embryo transfer pregnancy is relatively high, but because egg donors are needed, they may face legal and ethical issues. In China, there are some regular hospitals and institutions that offer donation services, including the famous reproductive centers and large tertiary hospitals.
3. Pregnancy
Pregnancy is a special method of IVF replacement. In this way, the mother will transfer the fertilized egg into her uterus, and she will be responsible for the pregnancy and delivery of the baby, but the baby produced has nothing to do with the mother's genetic genes. Pregnancy is often the choice of women who are unable to conceive or whose pregnancy will endanger their health. There are also some male couples who choose because they are physically unable to participate in childbirth.
The legal and ethical issues of pregnancy are controversial, and not all countries are legal. Pregnancy is prohibited in the country. But internationally, some countries, such as the United States, Britain and so on, allow pregnancy and have established relevant laws and regulations.
4. Natural return of embryos in vitro
The natural regression of embryos in vitro is a special way of IVF surrogate pregnancy. In this way, scientists use assisted reproduction technology to culture the fertilized egg to the embryo sac stage, then take out part of the embryo for gene detection and repair, and finally transplant the repaired embryo into the mother's uterus again.
The natural regression mode of embryos in vitro is relatively new, and it is still rare in hospitals at present. However, with the continuous development and improvement of reproductive medicine technology, it is expected to become one of the more common IVF surrogate pregnancy methods in the future.
summary
IVF surrogate pregnancy has a variety of ways. At present, the common ways are in vitro fertilization embryo transfer pregnancy, egg donation embryo transfer pregnancy, pregnancy and natural return of embryos in vitro. Each method has its own adaptation and limitations of laws and regulations. Many couples and individuals who cannot conceive naturally have the opportunity to realize their reproductive dreams by choosing a way that suits them.
