The Geriatrician is called to make a careful multidimensional assessment of the elderly patients who have been suggested for the interventions mentioned above. His role is to assess the degree of co-morbidity and polypathology, autonomy in the common activities of daily living, nutritional status, cognitive status and quality of life. Following this evaluation, together with the other components of Heart Team, it is expressed a collective judgment on the patient's eligibility to these interventions. So, the aim of the present study is to identify changes in the degree of cognitive decline, of autonomy in carrying out activities of daily living, quality of life, nutritional status, pre- and postoperatively (6 months after the procedure) polypathology degree in elderly patients to be undergone or undergoing TAVI or positioning MitraClip because suffering from aortic valvular stenosis or severe mitral insufficiency. The patients undergo to a battery of tests, to a 5 minutes electrocardiographic record to evaluate the Heart Rate Variability (HRV) and to a complete echocardiographic evaluation.