Placenta previa with early opening of the uterine isthmus is associated with high risk of bleeding during pregnancy, and massive haemorrhage during caesarean delivery.
Goto M, Hasegawa J, Arakaki T, Takita H, Oba T, Nakamura M, Sekizawa A.
Risk factors for massive bleeding based on angiographic findings in patients with placenta previa and accreta who underwent balloon occlusion of the internal iliac artery during cesarean section.