PFO is a flap-like opening in the heart between the upper chambers. The foramen ovale is a structure in the wall of the heart between the two upper chambers.Treatment is a catheter procedure or surgery to close the opening in the heart. Our Adult Congenital Heart Center in New York City is a pioneer in the treatment of stroke-related patent foramen ovale. Call today 212-305-6936. A heart condition called patent foramen ovale caused a stroke in this 18yearold. Doctors from three Northwell hospitals came together to save his life. This study aims to determine if elevated Lipoprotein (a) levels in patients with PFO increase the likelihood of stroke or transient ischemic attack (TIA). Most people with a patent foramen ovale don't need treatment. Patent foramen ovale are commonly found at autopsy (probe patent 29 percent, pencil patent 6 percent).