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动脉抗板,静脉抗凝有何区别?

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动脉抗板,静脉抗凝有何区别? JPEG Origin Image Download
①静脉系统
静脉血流速度比动脉慢,静脉瓣瓣尖无滋养血管,靠静脉流动的血液获得氧气和营养。一旦血液停滞、缺氧即诱导瓣尖表达组织因子,激活凝血酶,促发血栓形成,对血小板的依赖程度低,抗血小板治疗并不能带来明确的益处。因此静脉系统血栓的防治以抗凝治疗为主。比如长期卧床的患者易出现静脉血栓。临床上多用抗凝药物治疗。