1. Right-to-Left Shunt Across a Patent Foramen Ovale Caused by Cardiac Tamponade: Diagnosis by Transesophageal Echocardiography 
RANDALL C. THOMPSON, M.D. 
Mayo Clinic Proceedings 
Volume 66, Issue 4, Pages (April 1991)
DOI: /S (12)
Copyright © 1991 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Transesophageal echocardiograms in 71-year-old woman with profound hypoxemia. A, Diastolic frame, showing severe compression of left atrium (LA) and left ventricle (LV) by a large, loculated, posterior pericardial effusion. AV = aortic valve; PE = pericardial effusion. B, Localized view of atria. Atrial septum (arrow) is bulging far into left atrium. RA = right atrium. C, After injection of agitated bacteriostatic saline into a central venous line, right atrium is filled by a cloud of microbubbles. Arrow = stream of microbubbles crossing fossa ovalis membrane and entering left atrium.
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1991 Mayo Foundation for Medical Education and Research Terms and Conditions