Foramen ovale
Foramen ovale is a hole located in the septum, which is the wall between the two upper chambers of the heart known as the atria. This hole is present in all fetuses and usually closes shortly after birth.
Anatomy
The anatomy of the foramen ovale is such that it allows blood to bypass the lungs in the fetal circulatory system. This is because the lungs are not yet in use before birth, and the foramen ovale allows oxygenated blood coming from the mother to circulate throughout the fetus's body.
Function
The primary function of the foramen ovale during fetal development is to allow blood to bypass the lungs, which are not yet in use. After birth, when the lungs become functional, the foramen ovale typically closes. If it remains open, it is referred to as a patent foramen ovale (PFO).
Patent Foramen Ovale
A patent foramen ovale is a condition where the foramen ovale fails to close after birth. This can lead to a number of health issues, including the potential for a stroke. Treatment for a PFO may include medication, or in some cases, surgery.
See Also
References
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