Since the 1950s more than 80 models of prosthetic heart valveshave been developed and used. More than 60,000 valve replacementsare performed annually in the United States. Prosthetic heartvalves may be mechanical or bioprosthetic. Mechanical valves,which are composed primarily of metal or carbon alloys, areclassified according to their structure as caged-ball, single-tilting-disk,or bileaflet-tilting-disk valves. Bioprostheses may be heterografts,which are composed of porcine or bovine tissue (pericardialor valvular) mounted on a metal support, or homografts, whichare preserved human aortic valves. The most commonly used prostheticvalves are listed in Table 1 and illustrated . . . [Full Text of this Article]
Characteristics of Prosthetic Valves
Assessment of Prosthetic-Valve Function
Potential Complications and Their Management
Valve Thrombosis
Embolization
Structural Failure of Tilting-Disk Valves
Structural Failure of Bioprosthetic Valves
Hemolysis
Paravalvular Regurgitation
Endocarditis
Antithrombotic Therapy in Patients with Prosthetic Valves
Source Information
From the Cardiovascular Division, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas.
Address reprint requests to Dr. Hillis at Rm. CS 7.102, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75235-9047.
References
Related Letters:
Rumbles and Prosthetic Heart Valves
Commerford P. J., Stevens J. E., Millar R. S., Vongpatanasin W., Hillis L. D., Lange R. A.
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Full Text
N Engl J Med 1997;
336:1259-1260, Apr 24, 1997.
Correspondence
Prosthetic Heart Valves
Weiss R. L., Walther T., Falk V., Pettelot G., Sundt T. M., Murray K. D., Vongpatanasin W., Hillis L. D., Lange R. A.
Extract |
Full Text
N Engl J Med 1997;
336:222-224, Jan 16, 1997.
Correspondence
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