Cardiac pathology after valve replacement with a tilting disc prosthesis (Björk-Shiley type)

摘要: Abstract Clinical and necropsy observations are described in 46 patients who had one or more cardiac valves replaced with a tilting disc prosthesis of the Bjork-Shiley type, these compared earlier caged ball, trileaflet prostheses. In contrast its frequent occurrence studied peripheral flow prostheses, either ball disc, prosthetic dysfunction from disproportion (too small ventricular cavity aortic root to freely accommodate prosthesis) was observed only 2 semicentral prosthesis. Significant trauma erythrocytes, as determined by presence renal hemosiderosis, occurred 1 11 died late after valve replacement; it frequently far greater severity replacement Prosthetic thrombi may be less than disc. They 7 13 replacement, but 3 infective endocarditis, remaining 4, been receiving warfarin sodium. contrast, were 81 88 percent, respectively, 112 prosthesis, most received anticoagulant therapy. Although implantation periods relatively short (3 30 months, average 11), wear variance did not occur any late. (Bjork-Shiley) is prone clot (and therefore require long-term anticoagulation), device intrinsically stenotic significantly incompetent, minimally traumatic erythrocytes and, at this time, there no evidence degeneration variance.