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 ...

New research shows that cryoablation is a safe and effective approach to close congenital patent foramen ovale (PFO, a small hole in the heart) in patients with atrial fibrillation (AF) undergoing ...