早产男婴,日龄5天,不吃、不哭,体温不升,呼吸浅表,体检:下肢、臀部皮肤发硬,呈紫色,伴凹陷性水肿,应首先考虑( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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