The chances of having a twin pregnancy through assisted reproduction are much greater than if the pregnancy occurs naturally. In this video We know why so many twin pregnancies in assisted reproduction.
The reason is that, after ovarian stimulation processes, patients are often implanted with several embryos because of the possibility that some of them are not viable.
The competence of embryos depends on diverse factors and is not easy to determine at present, so that multiple transfer is made, especially if it is not the first fertility treatment or if the woman is elderly.
However, as the risks of multiple pregnancies are up to 40 times higher that in single pregnancies, assisted reproduction specialists work on techniques to transfer a single embryo to women whenever possible.
For this, laboratories must have the necessary means, and evaluate the embryos, ideally discarding the non-viable, or even reserve the competent ones, creating them.
There is still a long way to go in these techniques that, however, were unimaginable a few decades ago. And there is already a lot of research trying to reduce the number of multiple unwanted pregnancies in assisted reproduction.
David Mortimer, president of Oozoa Biomedical (Canada), external quality consultant for assisted reproduction centers worldwide and collaborator in the design of in vitro fertilization laboratories (IVF) of prestigious clinics, explains in this video why there is a high number of twin pregnancies in assisted reproduction and what would be necessary to avoid them and opt for simple pregnancies.
