患者男性,44岁,有溃疡病病史。患者近日感觉上腹饱胀不适,餐后疼痛加重,并有大量反复呕吐,呕吐物为酸腐味的宿食。此时对该患者最有效的护理措施是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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