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【单选题】
关于心脏病患者心脏手术麻醉前心血管用药，叙述错误的是（）
A.
β-受体阻滞剂、钙通道阻滞剂和硝酸酯，应常规应用，直到手术室，长效钙通道阻滞剂可术前改用标准型
B.
洋地黄类通常在术前24h停用，左房室瓣狭窄者控制心率可继续用
C.
目前多主张应持续服用抗高血压药至手术当日，以控制患者血压处于适当的水平
D.
抗心律失常药在术前应停用
E.
α2-受体激动剂已很少用于治疗高血压，但可作为麻醉前用药
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is leaving, is taking off
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