Small aortic annulus: the hydrodynamic performances of 5 commercially available bileaflet mechanical valves.


OBJECTIVE Hemodynamic performances of mechanical valve prostheses in patients with aortic valve stenosis and a small aortic annulus are crucial. We analyzed the in vitro hydrodynamics of 5 currently available bileaflet mechanical prostheses that fitted a 21-mm-diameter valve holder of a Sheffield pulse duplicator. METHODS Three samples of 5 high… (More)