In this video, Dr. Radha Krishnan, Director, Pediatric Cardiologist at Fortis Escorts Heart Institute, New Delhi, will discuss about a baby with PFO and when should he/she go for an intervention. He said that generally PFO’s are not closed. Nearly 26% of normal population has PFO. He further explained that the closure of PFO is done only when the doctors feel that it is give extra benefits and in certain conditions such as cryptogenic stroke which is a hidden stroke. There is no known cause for this type of stroke. Echocardiogram with bubble study is done to diagnose it and if confirmed then closure of PFO is done to avoid recurrent cryptogenic stroke. He will further talk on other conditions when is it done as a prophylactic measure.