Society for Maternal-Fetal Medicine Special Statement: Updated checklists for management of monochorionic twin pregnancy.

Approximately 20% of twin pregnancies are monochorionic. The management of monochorionic twin pregnancy involves several additional interventions beyond the routine management of singletons or dichorionic twins. In 2015, the Society for Maternal-Fetal Medicine posted checklists for monochorionic/diamniotic twins and monochorionic/monoamniotic twins. The Society presents updated versions of these 2 checklists reflecting recent changes in practice recommendations. Suggestions for implementing the use of the checklists into antenatal care practices are also included.