Paravattil Bridget, Elewa Hazem
1 Clinical Pharmacy and Practice Section, College of Pharmacy, Qatar University, Doha, Qatar.
J Cardiovasc Pharmacol Ther. 2017 Jul;22(4):347-355. doi: 10.1177/1074248416683048. Epub 2016 Dec 21.
The use of aspirin and a P2Y receptor antagonist as dual antiplatelet therapy (DAPT) has become the treatment of choice in patients with acute coronary syndrome (ACS) and percutaneous coronary intervention to prevent recurrent thrombotic events. Although DAPT is beneficial for most patients, few patients still experience recurrent thrombotic events and increased bleeding episodes. This article reviews current literature to identify various approaches that may enhance the DAPT benefit-risk ratio in patients with ACS. Three strategies addressed in this article include the following-(1) use of more potent antiplatelet agents other than clopidogrel; (2) addition of direct oral anticoagulants (DOACs) to DAPT; and (3) optimizing DAPT duration. Although the use of prasugrel or ticagrelor improves treatment efficacy, their use has been associated with increased risk of bleeding compared to clopidogrel. The combination of DOACs and DAPT may not be the most viable strategy because of its limited cardiovascular benefits and increased bleeding risks. The optimal duration of DAPT duration remains controversial. Most guidelines recommend 6 to 12 months of DAPT, whereas emerging studies have shown benefit for both shorter and longer duration of treatment. Risk stratification tools such as the DAPT score may play a role in individualizing DAPT duration according to patient's ischemic and bleeding risks.
使用阿司匹林和P2Y受体拮抗剂作为双联抗血小板治疗(DAPT)已成为急性冠状动脉综合征(ACS)和经皮冠状动脉介入治疗患者预防复发性血栓事件的首选治疗方法。尽管DAPT对大多数患者有益,但仍有少数患者会出现复发性血栓事件和出血事件增加的情况。本文回顾了当前的文献,以确定各种可能提高ACS患者DAPT获益风险比的方法。本文讨论的三种策略如下:(1)使用除氯吡格雷之外更强效的抗血小板药物;(2)在DAPT基础上加用直接口服抗凝剂(DOACs);(3)优化DAPT疗程。尽管使用普拉格雷或替格瑞洛可提高治疗效果,但与氯吡格雷相比,它们的使用与出血风险增加有关。DOACs与DAPT联合使用可能不是最可行的策略,因为其心血管益处有限且出血风险增加。DAPT的最佳疗程仍存在争议。大多数指南推荐DAPT疗程为6至12个月,而新出现的研究表明,较短和较长疗程的治疗均有益处。风险分层工具如DAPT评分可能在根据患者的缺血和出血风险个体化确定DAPT疗程方面发挥作用。