In principle, there is no increased risk because the pregnancy is achieved through assisted reproduction. Multiple pregnancy itself is considered high-risk, whether it is achieved naturally or not. In the mother, pathologies such as gestational diabetes, hypertension or pre-eclampsia may appear in a higher proportion.
In the baby, there may be prematurity and low birth weight. This means that organs such as the lungs are not mature and, therefore, the probability of survival is reduced.