Prenatal care allows early detection of risks and complications in the pregnant women in an attempt to minimize problems at birth and delivery. In Geneva, prenatal care is organized as a collaboration between private and liberal in-hospital network with a ranking in the pregnancy risk levels to adapt follow-up. The perinatal care structure should be built in a way to identify risks prompting professionals to adapt from the normal physiological care to a therapeutic escalation one appropriated to the detected risk level. Effective inter-professional collaboration around the mother-child dyad (and even the family) depends on a privileged multidisciplinary interaction platform in which, wide inter-professional communication, particularly between midwife-obstetrician-neonatalogist, is essential.