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Patent Foramen Ovale (PFO)
Patent Foramen Ovale (PFO) Learning Center

Patent Foramen Ovale (PFO)
While a baby grows in the womb, there is a normal opening between the left and right atria (upper chambers) of the heart. If this opening fails to close naturally soon after the baby is born, the hole is called patent foramen ovale (PFO.
One in four people develop a heart condition called patent foramen ovale shortly after birth. Usually, no treatment is needed. Here's what...
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