Key result
A modified porous metal-surfaced Björk-Shiley Monostrut heart valve with polished high-flow areas was designed to reduce thrombosis and bacterial invasion risks without anticoagulation.
Why the study?
Does a modified porous metal-surfaced Björk-Shiley monostrut heart valve reduce the risk of thrombosis without anticoagulation in goats?
Does a modified porous metal-surfaced Björk-Shiley monostrut heart valve reduce the risk of thrombosis without anticoagulation in goats?
Selective polishing and limiting porous surfaces on mechanical heart valves may promote endothelialization and reduce thrombosis and infection risks without anticoagulation in a preclinical model.
Hypothesis-generating in a goat model; leaves open whether modified mechanical valves can safely eliminate anticoagulation in patients.
To diminish the risk of thrombosis on a mechanical heart valve without anticoagulation, specific areas of the valve ring should be polished, as thrombosis has not been found to start there. By limiting the porous-surfaced area to the groove and the adjacent part of the flange, the thin endothelialized covering of the carbonized suture ring will continue over the groove and top of the flange to the high-flow area. As the high-flow areas that are not completely covered with the neointima, i.e. the struts and the vertical or central portion of the valve ring, are at increased risk of bacterial invasion if their surface is porous, they should be left uncoated and polished.
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Björk et al. (1990) studied Mechanical heart valve replacement. Modified Porous Metal-Surfaced Björk-Shiley Monostrut Heart Valve was evaluated. A modified porous metal-surfaced Björk-Shiley Monostrut heart valve with polished high-flow areas was designed to reduce thrombosis and bacterial invasion risks without anticoagulation.
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