Should the number of embryos placed in IVF be controlled?
Test tube baby is an assisted reproductive technology. After years of development and improvement, it has played an important role in many infertile couples to realize their reproductive dreams. In the process of IVF, doctors usually put multiple embryos into the uterus to increase the success rate of pregnancy. However, does the number of embryos placed need to be controlled? The following will elaborate on this issue from the aspects of medical risks, pregnancy success rate, economic costs and ethics.

Medical risks
Too many embryos placed may increase the medical risks of mothers and infants. In the process of IVF, women need to receive treatment of assisted reproductive technology, such as the use of ovulation promoting drugs and the process of ovum retrieval, which may lead to a series of side effects and complications, such as ovarian hyperstimulation syndrome and multiple pregnancy. In multiple pregnancy, the baby's birth weight may be low, and the risk of premature delivery and other health problems will also increase. Therefore, in order to reduce medical risks, the number of embryos placed should be properly controlled.
On the other hand, if too few embryos are placed, the success rate of pregnancy may be reduced. Each embryo faces certain risks during its development. Placing fewer embryos may result in no embryo being able to successfully implant and develop into a fetus, thus reducing the chance of successful pregnancy. Therefore, in order to improve the success rate of pregnancy, the number of embryos placed should also be considered.
Pregnancy success rate
Placing more embryos can improve the success rate of pregnancy. According to research, the IVF cycle with two or more embryos has improved the pregnancy rate to some extent. This is because placing multiple embryos can increase the chance of implantation and increase the probability of embryos developing into healthy fetuses. However, placing too many embryos may increase the risk of multiple pregnancies and increase the medical risk of mothers and infants. Therefore, doctors need to weigh the success rate of pregnancy and medical risks to determine the appropriate number of embryos to be placed.
Economic cost and ethics
Placing more embryos will increase the economic cost. In the process of IVF, many operations of assisted reproductive technology are required, including egg retrieval, fertilization and embryo culture. Each step requires a certain amount of cost. In addition, placing too many embryos may lead to multiple IVF cycles, increasing the economic burden. Some couples may give up trying because of financial pressure.
From the perspective of ethics and morality, placing more embryos may cause a thorny problem: how to deal with the redundant embryos? Couples may face the choice of freezing, discarding or donating embryos, which involves personal and social ethical issues. Therefore, when placing embryos, we need to consider these ethical issues and fully respect the wishes of the couple.
Summary
In conclusion, the number of embryos placed needs to be properly controlled during IVF. Too many embryos placed may increase the medical risk and economic cost, and increase the risk of multiple pregnancy; However, too few embryos placed may reduce the success rate of pregnancy. Doctors need to comprehensively consider the success rate of pregnancy, medical risks, economic costs, ethics and other factors, and develop appropriate embryo placement strategies to help couples achieve their reproductive dreams.