In a summer night in Taiwan, Xiao Hong was going on her way to school happily then suddenly she felt the street was strong shaking. The trees were torn up and many buildings were leaned down to the ground. Even a car was destroyed by the fallen buildings. She was knocked down by a tree before she knew. Two doctors carried him to safety and she was settled down in a tent for treatment. After some time, she had got over. Seeing such many goods from the mainland of China and other countries, she believed all the destroyed houses would be built.

下列哪项与羊水栓塞的诊断有关（）

A.分娩时出现典型的临床表现

B.抽取下腔静脉血镜检有无羊水成分

C.胸部X平片了解肺部情况

D.ECG检查

E.纤溶全套检查