作者
Diane Fatkin, Raymond P Kelly, Michael P Feneley
发表日期
1994/3/15
期刊
Journal of the American College of Cardiology
卷号
23
期号
4
页码范围
961-969
出版商
Elsevier
简介
Objectives. The aim of this study was to determine the relations between spontaneous echo contrast, left atrial appendage blood flow velocity and thromboembolism.
Background. Left atrial thrombus and spontaneous echo contrast, a putative marker of thromboembolic risk, are frequently located in the left atrial appendage. Measurement of left atrial appendage outflow Doppler velocity by transesophageal echocardiography is a recent technique for assessment of left atrial appendage function, which may be important in thrombus formation.
Methods. Transthoracic and transesophageal echocardiographic studies were performed in 140 patients with atrial fibrillation (chronic in 80 patients, paroxysmal in 50 patients, first episode <2 weeks in 10 patients). The left atrium and appendage were inspected for thrombus and spontaneous echo contrast, which was graded from 0 (none) to 4+ (severe). Outflow velocity profiles …
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D Fatkin, RP Kelly, MP Feneley - Journal of the American College of Cardiology, 1994