I had a mild stroke in April and a PFO was detected after a Transesophageal Echocardiogram. My Neurologist put me on Asasantin (a bloodthinner) and Zocor (for elevated cholesterol). He didn't think it was necessary for me to see a Cardiologist but after repeated nagging from family and friends, I saw a Cardiologist last week. I had a 24hr Holter monitor to check for Atrial Fibrillation which I have yet to get results from. He is awaiting the report from the TOE, I guess to see the size of the hole. My question is, how big does a PFO have to be before it is a) able to be fixed and b) liable to be the cause of the stroke? If it is repaired, does that mean a stop to the thinners? The Cardiologist is wanting to put me on Warfarin (lots of blood tests... no thanks!) but I don't want to be on medication for the rest of my life... I am only 39! Any info would be greatly appreciated.