Inclusion Criteria:  patients with symptomatic severe aortic stenosis eligible for TAVR with LV systolic function less than 50%.  Exclusion Criteria:  Severe Rheumatic or degenerative mitral regurgitation. Previous Valve Replacement. Previous myocardial infarction. Previous Coronary Artery By Bass Graft (CABG)Surgery. Post TAVR significant paravalvular leakage