患儿,9个月,呕吐、腹泻4d。查体:口腔黏膜干燥,皮肤弹性差,尿量明显减少,血清钠140mmol/L。考虑该患儿为( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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