Every pregnancy poses a risk, and this risk increases in the case of a multiple pregnancy.
In surrogacy, it is no longer the mother who assumes the risk of a problem during pregnancy, it is another woman who does it and her life may be at risk. Therefore, it is essential to ensure the health of the surrogate mother first and foremost.
In the event that donor eggs are used to generate the embryos, it is best to transfer a single embryo into the pregnant woman's uterus. Probably these embryos are of good quality and the single transfer will avoid risks for the woman who decides to carry the pregnancy to term, that is, for the surogate.