The average twin pregnancy is 35 weeks, compared to the average singleton pregnancy, which is 39 weeks. Britney Alba delivered the girls by C-section and following time in the NICU, the girls are now home with their mom, dad and brothers, reports Fox19. You are also at risk as a mother carrying monoamniotic twins. If each embryo develops its own amniotic sac, it is called Diamniotic, and the two embryos will share the same egg sac while advancing in their own amniotic sacs. MORE ON Hospitals. In 15%, an intertwin transfusion imbalance occurs. Because of some of the extra risks involved in a mono/di pregnancy, you can expect that youll likely need a fetal echocardiology in addition to routine ultrasound assessments. Parents Of Singapore's MOMO TWINS Leia And Lauren - theAsianparent The risk of co-twin death following death of a twin after 20 weeks gestation is 12 per cent (95 per cent CI 7-18) for MC twins and four per cent (95 per cent CI 2-7) for DC twins. After being admitted to the High-Risk Obstetrics Unit at the University of Alabama at Birmingham (UAB) at 25 weeks pregnant, Alba stayed there for over 50 days before giving birth via caesarean section at 32 weeks. Thank you, {{form.email}}, for signing up. Identical twins occur when a single fertilized egg splits and develops into two fetuses. Momo Twins!- so scared! Following the delivery of your babies, hemorrhage is also a possibility your doctor will be ready to treat. The amnion is the innermost membrane that holds the fetus and amniotic fluid. Monochorionic twin pregnancies face higher risks because of the shared circulation. But it was like a laughing-and-crying-at-the-same-time moment. [4] Causes of mortality and morbidity include: Ultrasound is the only way to detect monoamniotic-monochorionic twins before birth. Find. Mono Di Twins: What You Need to Know TwinStuff Although their neonatal mortality and morbidity is high, outcomes for survival are better than anticipated.