【单选题】【消耗次数：1】
17.急性肾功能衰竭时,可用何药与利尿剂配伍来增加尿量 ( )
①
多巴胺
②
麻黄碱
③
去甲肾上腺素
④
异丙肾上腺素
⑤
肾上腺素
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肾上腺素和去甲肾上腺素对心血管的效应是（）
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两者的升压效应相同
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两者引起的心率变化相同
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小剂量的肾上腺素使骨骼肌微动脉舒张
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去甲肾上腺素使胃肠道微动脉舒张
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在完整机体中，注射去甲肾上腺素后引起血压升高，心率加快
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升压作用弱.持久,易引起耐受性
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作用较强,维持时间久,中枢兴奋
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口服给药可避免发生耐受性及中枢兴奋作用
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