Prosthetic Aortic Valves: Challenges and Solutions

Prosthetic Aortic Heart Valves

In this review, the anatomy and structure of the aortic valve and its prostheses are comprehensively discussed. Cardiac anatomy and function, human heart valves and their prostheses are also extensively discussed. The current status of prosthetic heart valves along with the next generation of these devices is broadly deliberated. Ather promising options such astranscatheter technologies (percut...

Major detachment of aortic prosthetic valves.

The clinical and investigatory findings in five instances of major detachment of an aortic valve prosthesis in four patients are described. This situation was associated with auscultatory and peripheral signs of aortic regurgitation and, in addition, a mid-diastolic murmur in the mitral area. From the haemodynamic and operative findings it was postulated that, in addition to severe aortic regur...

Prosthetic Aortic Valves: A Surgical and Bioengineering Approach

Renal hemosiderosis in patients with prosthetic aortic valves.

DURING recent years, considerable effort has been directed to the development of effective operative methods for the correction of stenotic and regurgitant malformations of the aortic valve. Initially, reconstructive procedures on the valve were performed, but the results of these operations were generally unsatisfactory. Prosthetic valves were then utilized, and the first ones to gain wide acc...

Comparison of eight prosthetic aortic valves in a cadaver model.

OBJECTIVES Proper valve selection is critical to ensure appropriate valve replacement for patients, because implantation of a small valve might place the patient at risk for persistent gradients. Labeled valve size is not the same as millimeter measure of prosthetic valve diameters or the annulus into which it will fit. Studies that use the labeled valve size in lieu of actual measured diameter...