In this heart surgery, the surgeon uses stitches to close the PFO . Patent foramen ovale closure is a procedure to close a hole in the heart.We use minimally invasive approaches to treat PFO without open-chest surgery. A PFO closure fills an opening between your heart's two upper chambers. The foramen ovale usually closes 6 months to a year after the baby's birth. Patent foramen ovale closure can help reduce risk of another ischemic stroke. Learn more about a minimally-invasive treatment option. Patent foramen transcatheter repair is a procedure to fix this hole in the heart. Normally, the atrial septum separates the right and left atria.