Methods: We performed transesophageal echocardiography in 255 patients with first acute ischemic stroke and in 209 control subjects matched by age, gender, and race/ethnicity.

• 方法：我们对初次急性缺血性卒中患者255名及其年龄、性别和种族匹配的对照者209名进行了经食管超声心动图检查。