In vitro fertilization and twin pregnancy
In vitro fertilization is one of the assisted reproductive techniques with a higher percentage of the likelihood of achieving a pregnancy of non-identical twins or twins. In the world approximately 60% of twin pregnancies originate from in vitro fertilization.
It should be noted that when this type of pregnancy occurs after in vitro fertilization, it is usually twins or bike-gog twins and not identical or monocygotic twins.
These are two separate embryos that developed in the same pregnancy, i.e. twins that are born from two eggs and two different sperm, as a result do not necessarily have the same sex and do not resemble each other.
For its part when we talk about identical twins it refers to a single embryo that during the first phase of cell division has been separated into two parts forming two identical embryos, that is, these babies will have the same genetic information, which will make them physically similar.
Treatment of in vitro fertilization initially consists of an ovarian stimulation in which the woman is given hormonal medication to produce a greater number of eggs to be removed by follicular puncture, which will allow to obtain a greater number of embryos during fertilization in the laboratory, which will be implanted in the uterus of the patient who will choose the number of embryos to transfer , taking into account the recommendations of the medical team and laboratory.