ABSTRACT
The frequency of twin pregnancies is increasing because of aging of the maternal cohort and the use of assisted reproductive technologies1. Among the adverse outcomes associated with all multiple pregnancies are preterm birth, perinatal mortality and serious neonatal and maternal morbidity. Despite these general concerns, recent improvements in obstetric monitoring of fetal well-being, coupled with dramatic advances in neonatal care, permit greater flexibility with regard to obstetric intervention, especially in the case of preterm gestations. These changes have led to substantial improvements in perinatal outcomes in multiple pregnancies in the past decade.
