Abstract: Pernicious placenta previa (PPP) is prone to sudden and intractable bleeding. Interventional therapies have been widely used in the treatment of PPP in recent years, to reduce the bleeding during cesarean section and hysterectomy. They mainly include balloon occlusion and arterial embolization. Among them, internal iliac artery balloon occlusion can effectively prevent and reduce the bleeding during cesarean section of PPP, turning emergency into prophylactic treatment. Domestic and foreign research continues to explore the operation method, the timing of balloon occlusion, single balloon occlusion time when internal iliac arteries balloon occlusion is used during cesarean section of PPP. Balloon occlusion of internal iliac arteries has certain effect in clinical application of obstetrics, but the effect is limited when used separately in placenta percreta. Its complications mainly include thrombosis and embolism, vascular injury, radiation effect, and ischemia-reperfusion injury. This article reviews the application and existing problems of internal iliac artery balloon occlusion in cesarean section of PPP, to provide reference for clinical application.

Key words: Placenta previa；Radiography, interventional；, Iliac artery；, Postpartum hemorrhage；, Balloon occlusion；, Pernicious placenta previa