1. Flip-Flop Heart Mayo Clinic Proceedings
Amrut V. Ambardekar, MD, Mori J. Krantz, MD 
Mayo Clinic Proceedings 
Volume 85, Issue 1, (January 2010)
DOI: /mcp
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2. FIGURE 1
Electrocardiogram at the time of presentation with evidence of electrical alternans.
Mayo Clinic Proceedings  , DOI: ( /mcp )
Copyright © 2010 Mayo Foundation for Medical Education and Research Terms and Conditions

3. FIGURE 2
Echocardiographic images obtained from consecutive cardiac cycles revealed a nearly 90° rotation of the heart from beat to beat (top and bottom). There was evidence of right ventricular collapse in end-diastole as noted by the asterisk. LA = left atrium; LV = left ventricle; Pe = pericardial effusion; rV = right ventricle.
Mayo Clinic Proceedings  , DOI: ( /mcp )
Copyright © 2010 Mayo Foundation for Medical Education and Research Terms and Conditions