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Most PFOs require no treatment. People who have no risk factors for stroke or any history of traveling blood clots usually do not get treatment. Your healthcare provider may want to treat your PFO if you have had problems from these traveling blood clots, like stroke.
Now the oxygen-rich blood comes from the lungs and enters the left upper heart chamber. The pressure of the blood pumping through the heart usually forces the flap opening of the foramen ovale to close. In most people, the opening closes sometime during infancy.
Of 70 patients, 62 experienced spontaneous closure (89%). Figure 2. Kaplan- Meir plot of time to spontaneous closure of PFO. Spontaneous PFO closure occurred at a median age of 8 months.