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Left Atrial Spontaneous Echo Contrast in Hypertrophic Cardiomyopathy with Atrial Fibrillation


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Title: Left Atrial Spontaneous Echo Contrast in Hypertrophic Cardiomyopathy with Atrial Fibrillation
Authors: Honda, Yukiharu / Nakashima, Hiroshi / Akiyama, Yuki / Tasaki, Hirofumi / Suzuki, Shin / Katayama, Tomoyuki / Yano, Katsusuke
Issue Date: 14-Jun-2000
Citation: Acta medica Nagasakiensia. 2000, 45(1-2), p.37-41
Abstract: Transesophageal echocardiography was performed to assess the incidence of left atrial spontaneous echo contrast in patients with hypertrophic cardiomyopathy, who were divided into two groups according to the presence (group 1-A; 10 patients) or absence (group 1-B; 5 patients) of persistent atrial fibrillation. Twelve patients with atrial fibrillation (group 2) served as control. Among these, 5 patients had mitral regurgitation and 8 patients lone atrial fibrillation. Left atrial spontaneous echo contrast was detected in 8 patients (80%) in group 1-A, none in group 1-B, and 3 patients (25%) in group 2. The incidence of echo contrast in group 1-A was significantly higher than that in the other 2 groups. The size of the left atrium was not statistically different among the 3 groups. Accordingly, hypertrophic cardiomyopathy with atrial fibrillation seemed to be a specific diseased state to favor the development of the left atrial spontaneous echo contrast. Previous reports suggested that the presence of left atrial spontaneous contrast was considered as a warning sign of left atrial thrombus and would be an indicator of increased risk of embolism. 1)2)3) Three of the 8 patients who had spontaneous echo contrast in group 1-A had a history of systemic embolization. We proposed that patients with hypertrophic cardiomyopathy with atrial fibrillation were in a high risk state of thromboembolism.
Keywords: left atrial spontaneous echo contrast / hypertrophic cardiomyopathy / atrial fibrillation / systemic embolization.
URI: http://hdl.handle.net/10069/16156
ISSN: 00016055
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 45, No. 1-2

Citable URI : http://hdl.handle.net/10069/16156

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