Mechanical and bioprosthetic valves
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Prosthetic Heart Valves
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Mechanical and bioprosthetic valves
- 1. Mechanical and Bioprosthetic Valves Samuel Moreno; M.S
- 3. Mechanical Valves • Caged Ball 1960 • Tilting Disc/Single Leaflet 1969 • Bileaflet 1979
- 4. Bioprosthetic Valves • Porcine valves • Bovine pericardium
Editor's Notes
- In a retrospective cohort analysis of 4253 patients who underwent primary isolated aortic-valve replacement, 15-year survival and stroke rates were equivalent with bioprosthetic and mechanical valves. For bioprosthetic valves, the risk of repeat surgery was greater but the incidence of major bleeding was lower The choice of prosthesis is determined by the anticipated longevity of the patient and his/her ability to tolerate anticoagulation ilting disc valve models include the Medtronic Hall valve, shown in the image below, Omnicarbon (Medical CV) valves, Monostrut (Alliance Medical Technologies), and the discontinued Bjork-Shiley valves. Both of them can get problem with infection and clothing
- . Tissue valves can last 10-20 years, and usually don't require the long-term use of medication Bioprosthetic valves (see the image below) used in heart valve replacement generally offer functional properties (eg, hemodynamics, resistance to thrombosis) that are more similar to those of native valves Pacientes jovenes, dialysis destruyen las valvas mas rapidas Hay de 1 2 y 3 generación Las de 3 generación no necesariamente demoran mas en lifespan