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当前学科:中西医结合执业助理医师
题目:
单选题
上消化道大量出血伴休克时,最紧急和首要的措施是()。
A
头低位和吸氧
B
紧急胃镜检查以明确诊断
C
积极补充血容量
D
胃内冰水灌注止血
E
去甲肾上腺素胃内滴入
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