The NICHD Fetal Growth Study: Twin Gestations

Normal growth and development of twins are important for the long-term health of the children. The purpose of this study was to empirically define the trajectory of fetal growth in dichorionic twins using longitudinal two-dimensional ultrasonography and to compare the fetal growth trajectories for dichorionic twins with those based on a growth standard developed by our group for singletons. This knowledge may lead to interventions that could minimize or prevent pregnancy and newborn health problems in the future.