成年房颤患者的卒中发生率,依据合并症和既往脑血管事件史,为每年1%～20%不等(平均每年为4.5%)。对卒中风险的分层非常重要,因为用抗栓药降低房颤导致卒中的主要风险是出血。如华法令在减少缺血性事件风险的同时,每年有1%～12% The incidence of stroke in patients with adult AF is based on comorbidities and previous history of cerebrovascular events, ranging from 1% to 20% per year (an average of 4.5% per year). Stratification of stroke risk is important because the major risk of stroke with antithrombotic drugs to reduce atrial fibrillation is bleeding. Such as warfarin in reducing the risk of ischemic events at the same time, each year 1% to 12%