 Dr. Ranjan Shetty, interventional cardiologist in Manipal Hospital, Bangalore. Iotic stenosis is the disease which is treated by TAVI and hence the most important investigation would be echocardiogram and we do realize most elderly do undergo echocardiogram and at that time if they have a severe Iotic stenosis either they are candidate for surgery or they are candidate for TAVI. So once you with this you can meet a doctor and he would tell whether you are a candidate for TAVI or candidate for open-art surgery.