The doctor warned her about the risk of placental abruption and advised against strenuous activities.

abruption 是名词，来自动词 abrupt（突然中断）加上名词后缀 -ion。abrupt 由前缀 ab-（表示"离开"）和词根 rupt（来自拉丁语 rumpere，意为"打破"）组成，字面意思是"突然断裂"。 placental abruption 指胎盘在分娩前过早从子宫壁剥离的情况，即"胎盘早剥"。