The longest functioning heart valve prosthesis?
نویسندگان
چکیده
منابع مشابه
A mechanical analysis of the closed Hancock heart valve prosthesis.
In order to obtain mechanical specifications for the design of an artificial leaflet valve prosthesis, a geometrically non-linear numerical model is developed of a closed Hancock leaflet valve prosthesis. In this model, the fibre reinforcement of the leaflet and the viscoelastic properties of frame and leaflets are incorporated. The calculations are primarily restricted to 1/6 part of the valve...
متن کاملClinical experience with the Bicarbon heart valve prosthesis
BACKGROUND We have previously reported mid-term results of a study, which ended in January 2000, on the Bicarbon valve. The study concluded that the valve showed excellent clinical results, associated with a low incidence of valve-related complications. In the present study, the same patients were prospectively followed for an additional 5 years. METHODS Forty-four patients had aortic valve r...
متن کاملImage-guided Fluid-structure Interaction Simulations of Heart Valve Prosthesis
INTRODUCTION In spite of significant recent advances in imaging modalities for studying cardiac hemodynamics, present day in vivo measurement techniques can only resolve large scale blood flow features. Understanding flow patterns in the heart at physiological conditions and scales sufficiently fine for establishing quantitatively links between disease and patientspecific hemodynamics continues...
متن کاملMitral Ball-Valve Prosthesis
REPLACEMENT of nonfunctioning valves is a significant recent advancement in the correction of cardiac valvular disease. The most widely used artificial device replacing the mitral valve is the Starr-Edwards ballvalve prosthesis.' Its effectiveness was shown in recent reports by the marked clinical improvement in properly selected patients.2 However, cardiologists and cardiac surgeons are faced ...
متن کاملValvular Heart Disease Prosthesis-Patient Mismatch Predicts Structural Valve Degeneration in Bioprosthetic Heart Valves
Background—Prosthesis-patient mismatch (P-PtM) after aortic valve replacement results in disturbed valve performance associated with increased pressure gradients. However, it is unknown whether this can be related to future structural valve deterioration (SVD) of the bioprosthesis. Methods and Results—In 564 patients (mean age, 74 5 years) receiving an aortic valve bioprosthesis, clinical follo...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 2007
ISSN: 0022-5223
DOI: 10.1016/j.jtcvs.2007.05.051