Hi. I had a St Jude mechanical aortic valve in 2006. I have recently been hospitalised with shortness of breath and arrhythmia. It was found that one of my leaflets is stuck closed with what they think is scar tissue. I am on a four week trial of an anti platelet med in addition to Coumadin but surgeon thinks I will need a new valve within a month. I am 42 and very scared about going through this again. Anyone have a familiar story??