*2.2.2 Bleeding during pregnancy and postpartum bleeding*

Low lying placenta or placenta previa are more common in twin pregnancies. Placenta abruption is also more common is multiple pregnancy than it is in single pregnancies. Twin pregnancies cause uterus overdistention, which results in 10% of the cases in uterine atony. Umbilical umbilical cord bulging is ten times more common in twins than in singleton pregnancies. Velamentous umbilical cord insertion is ten times more common in twin pregnancies than in single pregnancies.
