心房颤动(atrial fibrillation,AF,简称房颤)是最常见的心律失常。在美国约有230万房颤患者,每年因房颤住院的患者约40万[1]。中国房颤患病率0.77%,标准化率为0.61%。年龄分组显示患病率有随年龄增加的趋势,据此估计全国房颤患者在1000万以上。房颤主要是发生在有心血管疾病的老年人。房颤的最 Atrial fibrillation (AF, referred to as atrial fibrillation) is the most common arrhythmia. About 2.3 million patients with atrial fibrillation in the United States and about 400,000 patients a year due to atrial fibrillation [1]. The prevalence of AF in China was 0.77% with a standardized rate of 0.61%. The age group shows that the prevalence tends to increase with age. Therefore, more than 10 million patients with AF in the country are estimated. Atrial fibrillation occurs mainly in the elderly with cardiovascular disease. Atrial fibrillation most