A PFO is present in everyone before birth but seals shut in most ... it can bypass the filtering system of the lungs, which dissolves tiny blood clots. If clots remain in the blood and pass through ...
Patent foramen ovale (PFO) is an interatrial communication at the level of oval fossa caused by the incomplete or missed fusion of the septum primum and septum secundum after birth. PFO has a ...
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