Monochorionic Twin Gestation

Care of the pregnant patient with monochorionic (MC) twin gestation entails specific steps that are imperative in recognizing complications that are unique to MC placentation. Here, we will review recommendations for care of the patient with known MC twin gestation, as well as discuss the pathophysiology, diagnosis, and management of these complications including, but not limited to, twin-twin transfusion syndrome (TTTS), twin anemia-polycythemia sequence (TAPS), selective fetal growth restriction (SFGR), and twin reversed arterial perfusion (TRAP) sequence.