心房颤动是引起脑卒中、心力衰竭及死亡的重要原因~([1])。有研究表明至少1/3的心房颤动患者无明显的症状,常在出现严重并发症时才被发现,因此称为无症状心房颤动,其危害可能更大,日益受到重视~([2])。国内外对无症状性心房颤动方面的研究尚少,本文观察无症状心房颤动患者的临床特点,探讨其与脑卒中的关系,现报道如下。1资料和方法1.1一般资料选择2011年8月至2013年11月宁波市第一医院、宁波市第七医院心房颤动患者 Atrial fibrillation is an important cause of stroke, heart failure and death ~ ([1]). Studies have shown that at least 1/3 of patients with atrial fibrillation no obvious symptoms, often only when serious complications were found, so called asymptomatic atrial fibrillation, the harm may be greater, more and more attention (~) [2] . Domestic and foreign research on asymptomatic atrial fibrillation is still small, this article observed the clinical features of patients with asymptomatic atrial fibrillation, to explore its relationship with stroke, are reported below. 1 Materials and Methods 1.1 General Information Select August 2011 to November 2013 Ningbo First Hospital, Ningbo Seventh Hospital, atrial fibrillation patients