1. Patent Foramen Ovale and Stroke
Steven C. Horton, MD, T. Jared Bunch, MD 
Mayo Clinic Proceedings 
Volume 79, Issue 1, Pages (January 2004)
DOI: /
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Figure 1
Early atrial developmental anatomy up to 3 months of gestation. The arrow indicates the shunting of blood through the foramen ovale and the ostium secundum and into the left atrium.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Figure 2
Embryological cardiac development at 3 months of gestation. AV = atrioventricular; LV = left ventricle; RV = right ventricle.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

4. Figure 3
Transesophageal echocardiogram of a patent foramen ovale (arrow). AV = aortic valve; EV = eustachian valve; LA = left atrium; RA = right atrium; RV = right ventricle.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

5. Figure 4 Atrial septal aneurysm. LA = left atrium; RA = right atrium.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

6. Figure 5
Transesophageal echocardiograms of a clot (arrows) traversing a patent foramen ovale. AV = aortic valve; LA = left atrium; RA = right atrium.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

7. Figure 6
Autopsy specimen of a clot (arrow) passing through a patent foramen ovale (PFO). PV = pulmonary vein. Photograph courtesy of William D. Edwards, MD, and Dylan V. Miller, MD, Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minn.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions

8. Figure 7
Transesophageal echocardiogram of an Amplatzer percutaneous closure device (arrows). LA = left atrium; RA = right atrium. Photograph courtesy of Naser M. Ammash, MD, Division of Cardiovascular Diseases, Mayo Clinic College of Medicine, Rochester, Minn.
Mayo Clinic Proceedings  , 79-88DOI: ( / )
Copyright © 2004 Mayo Foundation for Medical Education and Research Terms and Conditions