The majority of PFOs can be closed via minimally invasive or percutaneous catheter-based techniques. Trinity Health Michigan provides expert treatment for cardiovascular diseases across West Michigan, including patent foramen ovale.Patent foramen ovale repair: also called a PFO closure, is a procedure that's done to close the flap in the wall of the atrial septum. A patent foramen ovale (PFO) is a hole in the heart that doesn't close. It can increase your stroke risk, but we offer highly effective treatments. The foramen ovale is a hole in the wall between the left and right atria of every human fetus. This hole allows blood to bypass the fetal lungs. A patent foramen ovale is a small, flaplike opening in the wall between the upper chambers of the heart. Patent Foramen Ovale (PFO) Physicians: Stanley Joseph Chetcuti MD, Interventional Cardiology, Cardiovascular Disease, Internal Medicine. In this procedure, the provider inserts a thin, flexible tube called a catheter into a blood vessel in the groin area.