A specialized, FDA-approved device can be used to close a hole in the heart, called an ASO, or "Amplatzer Septal Occluder." Learn about treatments at Scripps for underlying conditions that can contribute to cryptogenic stroke, including A-Fib, patent foramen ovale and more.How do I get ready for robotic-assisted patent foramen ovale repair? The foramen ovale is a normal opening between the upper two chambers of an unborn baby's heart. During transcatheter repair, a healthcare provider inserts a device that can plug up the PFO. Select a state and find a physician near you who is Gore-certified on GORE CARDIOFORM Septal Occluder for PFO closure procedures. In roughly 75 percent of cases, the hole, called a patent foramen ovale (PFO), closes on its own and requires no treatment. This efficient approach may be advantageous in optimizing workflow and minimizing hospital occupancy. Dr. Lee MacDonald from South Denver Cardiology Associates talks about holes in the heart. Are they normal, do they need to be treated?