患者,女性,37岁,有9年的肺结核病史,未治愈,今日咳嗽后突然大咯血600mL,并咯血不止,病区护士应首选的紧急处理措施( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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