الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Aortic valve-sparing techniques captured the interest of cardiac surgeons and cardiologists due to various complications of prosthetic valves. Mechanical prostheses require lifelong anticoagulation and frequently develop thromboembolic and hemorrhagic problems. Also biological valves frequently require reoperation in the future. The aim of this study was to evaluate the two main surgical techniques of valve sparing (Yacoub procedure) and (David procedure), including the survival rate and occurrence of valve related morbidity that included aortic insufficiency grade 3 or greater, aortic valve-related reoperation and aortic valve endocarditis after performing both techniques. Our study was conducted at Cardiothoracic Surgery Department at University Hospital of Strasbourg and our department at Mansoura University Hospitals on 52 patients. Valve-sparing aortic root replacement is an attractive option for treating aortic root pathology. A precise understanding of the anatomy and function of the aortic root-valve complex is essential for the success of these technically demanding procedures. Despite excellent early and mid-term results, these procedures can be further improved. We concluded that mid term results of both main techniques of valve sparing root replacement (David and Yacoub) are comparable as regard the survival rate and the occurrence of valve related morbidity that included aortic insufficiency grade 3 or greater, aortic valve-related reoperation and aortic valve endocarditis after both techniques , even the occurrence of postoperative complication after both technique is quit similar with no statistically significant difference between both techniques , apart from longer bypass time that is associated with Yacoub technique which may affect the choice of the surgeon to prefer doing valve sparing root replacement with David procedure to shorten bypass time.