Patent Foramen Ovale (PFO) | American Heart Association
https://www.heart.org/en/health-topics/congenital-heart-defects/about-congenital-heart-defects/patent-foramen-ovale-pfo
WebSep 26, 2023 · The foramen ovale is a hole in the wall between the left and right atria of every human fetus. This hole allows blood to bypass the fetal lungs, which cannot work until air is inhaled after birth. When a newborn takes its first breath, blood pressures change and the foramen ovale flap closes.
DA: 58 PA: 78 MOZ Rank: 24 Up or Down: Up