初产妇,孕35周,有液体从阴道流出来院,无腹痛。行肛查,触不到羊膜囊,上推胎儿先露部可见到流液量增多。胎心率正常。最可能的诊断为( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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