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Patent foramen ovale embryology

Atrial septa at various stages of development. (A) 30 days (6mm). (B) Same as stage A, viewed from the right. (C) 33 days (9mm). (D) Same stage as C, viewed from the right. (E) 37 days (14mm). (F) Newborn. (G) The atrial septum from the right; same stage as F. (Reproduced with permission from: Sadler TW. Cardiovascular System. In: Sadler TW, editor. Langman’s Medical Embryology. 8th ed. Baltimore: Lippincott Williams and Wilkins, 2000:221-23.)

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  • Fat embolism
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  • Neurologic decompression illness
  • Obstructive sleep apnea
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  • Paradoxical embolism
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  • Right heart failure
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  • Tumor embolism
  • Venous thrombosis