P650Influence of fetunin-a level on progression of calcific aortic valve stenosis The COFRASA - GENERAC StudyP651Common carotid artery remodeling 1 year after aortic valve surgeryP652Low gradient aortic stenosis with preserved ejection fraction: reclassification of severity by 3D transesophageal echocardiography. P653Results of balloon aortic valvuloplasty in patients with impaired left ventricle ejection fraction.P654Burden of associated aortic regurgitation in patients with mitral regurgitationP655Differences in right ventricular mechanics in acute and chronic ischemic mitral regurgitation after inferoposterior myocardial infarctionP656Tricuspid regurgitation in patients operated for severe symptomatic native aortic stenosis: pre-operativ