Marco R. Di Tullio; Peter C. Block, M.D., F.A.C.C. However, the risk of first-ever stroke in asymptomatic subjects with PFO in the general population has not been clearly established. This ...
A patent foramen ovale or PFO is a defect in the wall between the two upper chambers of the heart. This defect is actually an incomplete closure of the atrial wall that results in a flap or valve-like ...