【单选题】【消耗次数：1】
关于常用抗血小板药物的叙述，哪项不正确？
①
阿司匹林可逆地抑制血小板内环氧化酶-1，防止TXA2形成，从而阻断血小板聚集。
②
替格瑞洛无需经肝脏代谢激活即可直接起效，其特点为起效快。
③
氯吡格雷的活性代谢产物可与P2Y12受体不可逆结合，从而发挥抗血小板聚集作用。
④
替格瑞洛与P2Y12受体可逆性结合，阻断血小板活化。
⑤
阿司匹林不可逆地抑制血小板内环氧化酶-1
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相关题目
【单选题】
ACS患者低血小板计数患者的抗血小板治疗描述正确的是？
①
血小板计数<100*109/L避免使用替格瑞洛
②
30*109/L＜血小板计数<60*109/L，建议使用单药(氯吡格雷或阿司匹林)维持治疗
③
血小板计数＜30*109/L，建议停用所有抗血小板药物，并避免行PCI
④
以上均对
【单选题】
下列关于抗血小板药物的描述，哪项不正确？
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阿司匹林属于环氧酶（COX）-1抑制剂。
②
氯吡格雷属于P2Y12受体抑制剂。
③
替罗非班属于磷酸二酯酶抑制剂。
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替格瑞洛属于P2Y12受体抑制剂。
⑤
糖蛋白（GP）Ⅱb/Ⅲa受体拮抗剂：替罗非班。
【单选题】
以下关于抗血小板药物的叙述，错误的是
①
阿司匹林通过抑制血小板环氧化酶使血栓素A2合成减少，达到抗血小板聚集的作用
②
氯吡格雷为前体药物，经肝脏细胞色素P450酶代谢活化后，与P2Y12受体不可逆结合，减少ADP介导的血小板激活和聚集
③
替格瑞洛是一种能够与P2Y12受体可逆性结合的活性药
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与氯吡格雷相比，替格瑞洛作用更强、起效更快
⑤
替格瑞洛的疗效受CYP2C19基因多态性的影响。
【单选题】
关于血小板下列哪项描述不正确？
①
血小板半衰期8-10天
②
血小板计数与出血严重程度相关
③
血小板来自骨髓的巨噬细胞
④
血小板减少可导致出血
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绝对素食可导致血小板减少
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