Mental performance preserved throughout two years after catheter-based implantation of an aortic valve prosthesisAortic valve stenosis is the most frequent heart valve defect of older people in Europe - the cause is usually increasing calcification of this important valve. In patients at high and excessive risk, conventional cardiac surgery is often no therapeutic option. For these patients, transcatheter aortic valve implantation (TAVI) remains the only opportunity.
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