The aim of this study is to evaluate the combined utility of the left atrial coupling index (LACI) and left ventricular speckle tracking echocardiography (LVSTE) in improving risk stratification and outcome prediction for patients undergoing Transcatheter Aortic Valve Implantation (TAVI). This study seeks to identify novel prognostic markers that enhance the prediction of mortality, heart failure, and functional recovery, ultimately enabling more personalized clinical decision-making and optimized patient outcomes by integrating the advanced echocardiographic parameters into pre-procedural assessments,.