Abstract
Introduction The cause of ischemic stroke so called, cryptogenic strokes is uncertain in approximately 40% of cases despite of intensive evaluation. Passage of thromboemboli from the right side circulation to the left side circulation through interatrial communications such as patent foramen ovale (PFO) or atrial septal defect (ASD) has been postulated as a possible mechanism of these cryptogenic strokes. Furthermore, percutaneous device closure of the interatrial communications has been proved to be a safe and effective method for the secondary prevention of presumed paradoxical embolism. We report a case of successful percutaneous closure of small ASD in patient with acute cerebral infarction presumably caused by paradoxical embolism through the defect.
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