RAVI PRAKASH, M.D., F.A.C.P.
To the editor: It is important to recognize the conditions leading to a false-positive diagnosis of pericardial effusion by echocardiographic techniques (1-3). The echocardiogram shown in the report of Liedtke, DeJoseph, and Zelis (Ann Intern Med 84:573-574, 1976) may have another interpretation and may not be an example of a falsely positive diagnosis of pericardial effusion. To confirm pericardial effusion and to differentiate the echo-free space from pleural fluid and an enlarged left atrium, it would have been helpful to obtain a scan from the region of the left ventricle toward the left atrium.
The echo-free space most likely represents
PRAKASH R. Echocardiography of Pericarditis. Ann Intern Med. 1976;85:395–396. doi: 10.7326/0003-4819-85-3-395_2
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Published: Ann Intern Med. 1976;85(3):395-396.
Cardiac Diagnosis and Imaging, Cardiology.
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