Outcomes of Surgery of Aortic Valve

Overall Goal: To study the outcomes of patients undergoing aortic valve surgeries, different approaches such as standard aortic valve replacement, aortic valve repair, novel techniques as Ozaki's procedure and their subsequent results and complications. * Objective 1: Identify predictors of complications following different types of aortic valve surgery accordingly. * Objective 2: Determine the value of each type in terms of advantages and disadvantages. * Objective3: Assess outcomes such as postoperative life expectancy, hospital stay, prognosis and quality of life.