title: Intraoperative and postoperative hemodynamic studies in patients undergoing aortic valve replacement with the Hall-Kaster cardiac disc valve prosthesis.
abstract: Intraoperative and postoperative hemodynamic measurements in the first patients to receive the Hall-Kaster cardiac disc valve prosthesis in the aortic position demonstrated the principal hemodynamic pattern of this new mechanical valve. These hemodynamic studies demonstrated favourable transvalvular gradient values and a degree of flow area utilization of the valve orifice which was close to its theoretical maximum. The Hall-Kaster prosthesis thus presented improved flow characteristics in patients undergoing aortic valve replacement, which is considered of particular importance to the patients with a narrow aortic root.
mesh_terms: D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D006328:Cardiac Catheterization; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology*; D011474:Prosthesis Design