Prosthetic Heart Valve Sounds & Murmurs Chapter 18 Are G. Talking, MD, FACC Instructor Patricia L. Thomas, MBA, RCIS Outline Four Commonly Used Types of Valve Prostheses Causes of Prosthetic Valve Malfunction Bioprosthesis Tissue valves have been used for 25 to 30 years Central blood flow Low Profile for easy fitting in aortic, mitral & tricuspid Continuous coumadin anticoagulation not needed Causes of Prosthetic Valve Malfunction Mechanical Valves are thrombogenic & requires long-term anticoagulation Thrombosis causes restriction of the disk movement Stenosis & regurgitation will occur Infection Wearing out Leaks Jamming Sticking Biprosthetic Degeneration THE END OF Chapter 18 Tilkian, Ara MD Understanding Heart Sounds and Murmurs, Fourth Edition, W.B. Sunders Company. 2002, pp