1. Occult Cardiac Tamponade Detected by Transesophageal Echocardiography
KEITH H. BERGE, M.D., WILLIAM L. LANIER, M.D., GUY S. REEDER, M.D. 
Mayo Clinic Proceedings 
Volume 67, Issue 7, Pages (July 1992)
DOI: /S (12)60723-X
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Transthoracic echocardiogram of 74-year-old man obtained at bedside in the intensive-care unit. In this parasternal long-axis view, images are poor, but an echo-free area posterior to left ventricular free wall is possible (labeled ?PE). Despite numerous attempts at imaging this area, pericardial effusion could not be definitively diagnosed. No anterior echo-free space is evident. A = anterior; AV = aortic valve; I = inferior; LA = left atrium; LV = left ventricle; P = posterior; PE = pericardial effusion; RV = right ventricle; S = superior.
Mayo Clinic Proceedings  , DOI: ( /S (12)60723-X)
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Fig. 2
Transesophageal two-dimensional echocardiogram of 74-year-old man obtained at bedside in the intensive-care unit. In this transgastric view, short-axis images of right ventricle and left ventricle are shown. Immediately posterior to both chambers is large, loculated pericardial effusion, which was producing localized tamponade. A = anterior; L = left; LV = left ventricle; P = posterior; PE = pericardial effusion; R = right; RV = right ventricle.
Mayo Clinic Proceedings  , DOI: ( /S (12)60723-X)
Copyright © 1992 Mayo Foundation for Medical Education and Research Terms and Conditions