Stephen J. Schueler, M.D.

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Patent Foramen Ovale Underlying Cause

The cause for atrial septal defect is unknown. For some reason, the atrial septum does not completely close as the heart forms in the fetus. The atrial septum is the wall that separates the upper chambers of the heart, called atria. The presence of the atrial septal defect results in the abnormal flow of blood from the left atrium into the right atrium.

Continue to Patent Foramen Ovale Anatomy

Last Updated: Aug 15, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Patent Foramen Ovale References
  1. Baskett RJ, Tancock E, Ross DB. The gold standard for atrial septal defect closure: current surgical results, with an emphasis on morbidity. Pediatr Cardiol. 2003 Sep-Oct;24(5):444-7. [14627310]
  2. Graham TP Jr, Driscoll DJ, Gersony WM, Newburger JW, Rocchini A, Towbin JA. Task Force 2: congenital heart disease. J Am Coll Cardiol. 2005 Apr 19;45(8):1326-33. [15837282]
  3. Moake L, Ramaciotti C. Atrial septal defect treatment options. AACN Clin Issues. 2005 Apr-Jun;16(2):252-66. [15876892]
  4. Pinto FJ. When and how to diagnose patent foramen ovale. Heart. 2005 Apr;91(4):438-40. [1577219]
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