Hemorrhage into the decidua basalis, formed retroplacental hematoma, lead to the separation of the placenta. 主要病理变化:底蜕膜出血,形成血肿,使胎盘自附着处剥离。
Investigation on the correlation between the adrenomedulin level in retroplacental blood and contraction intensity of uterus 胎盘后血中肾上腺髓质素水平与子宫收缩强度的相关性研究
The retroplacental clot can be seen in 30.7% of cases. Most of them show the malposition of Margin and Middle, and co-exist with adherent placenta and postpartum hemorrhage. 30.7%病例可见到胎盘后无回声区,多为边缘型和中间型错位,胎盘粘连和产后出血发生率高。