of patent foramen ovale during the first 10 decades of life: an autopsy study of 965 normal hearts. Ocean City Mayo Clin. results Image for designs Proc.. Most infants with a patent foramen ovale (PFO) won't experience symptoms. In some cases, though, a baby with a PFO and other heart or

lung problems may turn. Patent Foramen Ovale. The Heart While we are in the womb our blood supply, for the most part, bypasses our lungs. We get the oxygen that we need to grow. A patent foramen ovale is the persistence of a hole (the foramen

ovale) in the wall (septum) between the right atrium and left atrium of the heart.. A patent foramen ovale is very similar because it is a defect