Most people with a patent foramen ovale don't need treatment. Patent foramen transcatheter repair is a procedure to fix this hole in the heart.Normally, the atrial septum separates the right and left atria. PFO treatment closes the Patent Foramen Ovale (PFO) through blood thinning medicines or a catheter-based procedure to close the hole. PFO often has no symptoms. Many people don't need treatment unless they're at risk of stroke or blood clots. Medi-Cal offers free or low-cost health coverage for California residents who meet eligibility requirements.