ResultsCompared with patients in NAF group, those in NVAF group were older, severe paralysis, and conscious disturbance and hemianopsia, and less lacunar infarction.

病人瘫痪重，意识障碍程度深，偏盲发生率高而腔隙性脑梗死发生率低；

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Objective To investigate the mechanism of left atrial spontaneous echo contrast(SEC)in patients with nonvalvular atrial fibrillation(NVAF)and valvular atrial fibrillation(VAF).

目的研究瓣膜性心房颤动（房颤）和非瓣膜性房颤患者左心房自发声学显影（SEC）的形成机制。

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