患者,女性,47岁,胃十二指肠溃疡,手术后第7天护士发现患者出现高热、寒战,右上腹疼痛,伴有呃逆,该护士首先考虑患者并发了( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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