Background: The CarboMedics Top-Hat aortic valve prosthesis was designed to be implanted in a supra-annular position. This study aimed compare the hemodynamic performance of prostheses versus standard prostheses.
 Methods: included 98 patients who had replacement and were divided into two groups. Group A 60 prostheses, B 38 prostheses. endpoints hospital outcomes, effective orifice area, p...

OBJECTIVES The goal of this study was to compare long-term survival and valve-related complications between bioprosthetic and mechanical heart valves. BACKGROUND Different heart valves may have different patient outcomes. METHODS Five hundred seventy-five patients undergoing single aortic valve replacement (AVR) or mitral valve replacement (MVR) at 13 VA medical centers were randomized to r...

Tissue-engineered heart valves (TEHV) are a promising approach to solve problems in currently used prostheses. Studies of fibrin based heart valves show promissing results. To overcome last shortcommings concerning the mechanical strength we develope a textile reinforcement.Two approches are tested in this study. One is a composite of manual placed fibres and an electrospun nonwoven layer. The ...

introduction: rheumatic heart disease still remains one of the leading causes of congestive heart failure and death owing to valvular pathologies, in developing countries. valve replacement still remains the treatment of choice in such patients.the aim of this study wasto analyze the postoperative outcome of  double valve replacement (mitral and aortic ) in patients of rheumatic heart disease. ...

native-valve-endocarditis-using transesophageal echocardiography: implications for surgical treatment. Thorac Cardiovasc Surg 1991;39:273-80. 15 John RM, Pugsley W, Treasure T, Sturridge MF, Swanton RH. Aortic root complications of infective endocarditis-influence on surgical outcome. Eur Heart J 1991; 12:241-8. 16 Wong CM, Oldershaw P, Gibson DG. Echocardiographic demonstration of aortic root ...

In the July issue of the European Heart Journal an experimental study was reported on the percutaneous implantation of heart valves in the systemic circulation. Since the report by Bonhoeffer et al. in 2000 on the first percutaneous pulmonary valve replacement in man, the two authors felt challenged to move to the percutaneous implantation of the aortic valve. Despite many commercial activities...