关键词: 心房颤动；脑梗死；老年人；医院, 社区；CHA2DS2-VASc评分法；筛查；发生率

Abstract: Background　The elders are a high-risk population for atrial fibrillation（AF）.Improving the level of accurately screening for AF among the elderly in the community can help to reduce the risk of AF-related stroke.Objective　To examine whether the CHA2DS2-VASc scoring system is feasible for the screening of AF and ischemic stroke in the elderly in the community.Methods　The long-term older residents in a community，Beijing's Haidian District，were enrolled from October 2019 to March 2020.Medical history（including basic characteristics，and morbidity of common diseases），and results of normal 12-lead electrocardiogram were collected.Ischemic stroke risk was estimated by using the CHA2DS2-VASc scoring system.Results　A total of 328 olders were enrolled，including 40（12.2%） with AF and 60（18.3%） with ischemic stroke detected by the screen，with a mean CHA2DS2-VASc score of（3.2±1.5） points.Participants with AF had higher mean CHA2DS2-VASc score than those without（P<0.05）.The mean CHA2DS2-VASc score of those with ischemic stroke was higher than that of those without（P<0.05）.The AF prevalence in participants with CHA2DS2-VASc score from 0 to 6 was 0，4.8%（2/42），3.7%（2/54），14.6%（12/82），15.8%（12/76），8.3%（4/48），and 40.0%（8/20），respectively，showing a gradual increase with the CHA2DS2-VASc score（rs=0.248，P<0.001）.The ischemic stroke prevalence in participants with CHA2DS2-VASc score from 0 to 6 was 0，4.8%（2/42），11.1%（6/54），12.2%（10/82），18.4%（14/76），45.8%（22/48），and 30.0%（6/20），respectively，demonstrating a gradual increase with the CHA2DS2-VASc score（rs=0.296，P=0.001）.Conclusion　The CHA2DS2-VASc scoring system could be used to screen for AF and ischemic stroke in community-living elderly population.The olders with a higher CHA2DS2-VASc score may have a higher AF or stroke prevalence.

Key words: Atrial fibrillation；Brain infarction；Aged；Hospitals, community；CHA2DS2-VASc scoring system；Screening；Prevalence