JACC:联合抗凝治疗方案不能降低房颤患者心梗发生的风险!

2017-06-14 MedSci MedSci原创

房颤患者的血栓栓塞事件比如中风和心梗的发生风险要更高。尽管对于房颤患者来说,抗凝药物的效果要优于预防卒中的抗血小板药物,但目前用来预防心梗的最佳抗凝方案尚未明确。近日,在国际心血管权威杂志JACC上发表了一篇临床研究,旨在根据抗凝治疗的方案探索了房颤患者首次心梗的发生率,并评估了卒中和出血的风险。

房颤患者的血栓栓塞事件比如中风和心梗的发生风险要更高。尽管对于房颤患者来说,抗凝药物的效果要优于预防卒中的抗血小板药物,但目前用来预防心梗的最佳抗凝方案尚未明确。近日,在国际心血管权威杂志JACC上发表了一篇临床研究,旨在根据抗凝治疗的方案探索了房颤患者首次心梗的发生率,并评估了卒中和出血的风险。

本研究纳入了1997年至2012年在丹麦诊断为无冠心病病史的房颤患者,并根据抗凝治疗方案按照暴露时间分组。最终,共纳入了71959名患者(平均年龄75岁,女性占47%),其中,最初接受维生素K抗凝(VKA)单一治疗的患者有37539名(52%),25458名(35%)患者接受乙酰水杨酸(ASA)单一治疗,8962名(13%)患者接受复合治疗(VKA+ASA)。心梗的发生率为3%(n=2275)。相比于VKA治疗组,心梗发生率明显升高在ASA组(IRR:1.54;95% Cl:1.40-1.68)和复合治疗组(IRR:1.22;95% Cl:1.06-1.40)。出血风险在复合治疗组中更高(IRR: 1.93; 95% CI: 1.81-2.07)。相比于VKA治疗组,中风发生的风险要更高在ASA组(IRR: 2.00; 95% CI: 1.88-2.12)和复合治疗组(IRR: 1.30; 95% CI: 1.18-1.43)。

在房颤患者中,维生素K抗凝治疗方案的首次心梗和中风发生率要低于乙酰水杨酸治疗和复合治疗方案。ASA和VKA联合抗凝并不会降低心梗发生的风险,反而会增加患者出血的倾向。

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    2017-09-21 hbwxf
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