Previously, doctors preferred to transfer several embryos at once, because it increases the chances that at least one will successfully implant. In general, no more than 40% of transferred embryos manage to attach to the uterine lining, so this approach seemed to be reasonable.
However, multiple embryo transfer has its drawbacks. Two or more embryos can sometimes implant, resulting in multiple pregnancy. This situation can lead to serious pregnancy complications and premature birth.
It has been established that single embryo transfer maximizes the chances of giving birth to a healthy term baby. That’s why EBCOG suggests transferring only one embryo during IVF. This is beneficial to the health of both the mother and the child. Although it is the responsibility of doctors to transfer one embryo, in several countries the number of transferred embryos is determined under relevant legislation.
The discovery of single embryo transfer benefits is only one step in the continuous scientific effort. Researchers keep refining assisted reproductive technology to help people with fertility problems become parents, no matter their age, gender, medical condition, and background.
Content created in association with EBCOG, the European Board & College of Obstetrics and Gynaecology.