There are two procedures to close a patent foramen ovale are cardiac catheterization and robotic surgical repair. For children needing treatment for a PFO, we use cardiac catheterization to close the defect with a small device.What is the PFO closure procedure? Learn about patent foramen ovale (PFO), risk of PFO-associated stroke, and treatment options for PFO closure. ICE-GUIDED PERCUTANEOUS PFO CLOSURE. An estimated 700,000 people experience an ischemic stroke in the United States every year. A newer technology allows for PFO closure with a simple stitch placed in the heart.