Introduction Patent foramen ovale (PFO) is a common congenital cardiac lesion corresponding to a normal fetal interatrial communication that typically closes after birth with the fusion of the atrial septum primum to the septum secundum . When the foramen ovale persists, it is usually asymptomatic and benign, with no need for treatment. In rare cases, it can be implicated in the pathogenesis of some medical conditions, such as platypnea-orthodeoxia syndrome (POS). In this context, PFO closure may be indicated. Several […]

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