How can test tube babies get twins
IVF refers to the medical technology that processes the pregnancy substances in the laboratory and transfers them to the mother through in vitro fertilization, so as to help couples who cannot conceive naturally realize their reproductive dreams. Dragon and phoenix twins refer to twins who give birth to boys and girls at the same time in a pregnancy. In order to obtain the twins, a series of operations and controls need to be carried out in the process of IVF. The following will elaborate on the selection of high-quality embryos, the operation technology of embryo implantation, the auxiliary measures of drugs and the selection of hospitals.
Selection of high-quality embryos
The success rate of IVF is closely related to the quality of embryos. The selection of high-quality embryos is an important step in obtaining dragon and phoenix embryos. During in vitro fertilization, the embryo will go through multiple stages of development, including fertilized egg, 2-cell stage, 4-cell stage, 8-cell stage and blastocyst. Generally speaking, the blastocyst stage is an ideal time for embryo selection.
First, observe the morphological characteristics of the embryo under the microscope, such as the shape of the embryo, the number of cells and the development of the embryo cavity. The embryos with normal morphology often have higher survival rate and implantation rate.
Secondly, chromosome examination is used to determine whether the embryo carries chromosome abnormalities. Chromosome abnormalities can lead to abnormal embryonic development and increased risk of spontaneous abortion. PGS (Parallel Genetic Testing) technology can screen embryos with abnormal chromosomes, select healthy embryos for implantation, and improve the probability of twins.
In addition, the sex can be determined by examining the genotype of the embryo. In the medical research center where the Nobel Prize in Physiology or Medicine was awarded, the sex of embryos can be identified and selected through PGD (pre embryo genetic diagnosis) technology.
Operation technology of embryo implantation
Embryo implantation is the last step of IVF. In order to increase the probability of twins, the strategy of double embryo implantation can be adopted.
In traditional embryo implantation, doctors will choose the best embryo for implantation. Double embryo implantation means the simultaneous implantation of two embryos in one cycle. This can greatly increase the chance of twins. However, it should be noted that double embryo implantation will also increase the risk of multiple pregnancy. Couples need to fully communicate with doctors to understand the related risks and choose appropriate ways.
In addition, the implantation position of embryos is also an important factor affecting the probability of twins. Usually the embryo will be transferred to the uterine cavity in the female uterus, but the specific location of implantation will affect the blastocyst implantation. At present, some hospitals try to transplant blastocysts to specific locations of the uterus, such as vestibule, septum or other areas, to increase the success rate of blastocysts and the probability of twins.
Pharmaceutical auxiliary measures
In the process of IVF, for women, drug assisted measures are also a key link. Ovulation promoting drugs can stimulate the ovary to release multiple eggs, increasing the chance of pregnancy.
In general, doctors will decide which drugs and dosage to use according to women's age, ovarian reserve, ovulation cycle and other factors. The increase in the number of high-quality eggs also increases the possibility of twins.
Choice of hospitals
Choosing a formal and professional IVF hospital is also the key to getting the twins. In China, some large general hospitals and specialized hospitals specializing in reproductive medicine, such as Peking Union Medical College Hospital, Ruijin Hospital affiliated to Shanghai Jiaotong University School of Medicine, Guangzhou General Hospital of Guangzhou Military Region, have advanced laboratory equipment, rich clinical experience and professional medical and nursing teams, which can provide better IVF services for couples.
To sum up, we can regulate and operate from many aspects, such as selecting high-quality embryos, adopting double embryo implantation, adopting drug assisted measures, and selecting professional hospitals, in order to obtain twins. Each aspect has certain scientific basis and technical support, which can effectively improve the probability of twins. Therefore, couples can choose the method suitable for themselves according to their own conditions and under the guidance of doctors, so as to realize the dream of dragon and phoenix fetus.
