Predictors of Left Ventricular Systolic Function Recovery After Transcatheter Aortic Valve Replacement

"Evaluation of severity of aortic stenosis using :peak velocity ,peak and mean pressure gradient and aortic valve area by continuity equation.-Evaluation of left ventricular dimensions ,volumes and systolic function as assessed by ejection fraction (EF) by m-mode and biplane simpson's method at apical 4 and 2 chambers view Speckle tracking echocardiography(STE) Apical four-, three-, and two-chamber views were used to obtain longitudinal and circumferential strain before and follow-up after TAVR.~cardiac CT :Routine full protocol before TAVR for evaluation and Detection and calculation of left ventricular fibrosis using extracellular volume.~Coronary angiography:evaluate the presence of CAD and calculation of syntax score(SS)"