某产妇,第一胎,孕38周。双胎,第一胎儿臀位,行臀位牵引娩出。第二胎儿头位娩出,产后20分钟突然阴道流血200ml。胎盘尚无剥离现象。此时正确的处理措施是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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