Why the study?
Does the Hall-Kaster cardiac disc valve prosthesis provide favorable hemodynamic characteristics in patients undergoing aortic valve replacement?
Does the Hall-Kaster cardiac disc valve prosthesis provide favorable hemodynamic characteristics in patients undergoing aortic valve replacement?
The Hall-Kaster cardiac disc valve prosthesis provides favorable hemodynamic characteristics, which may be particularly beneficial for patients with a narrow aortic root.
Favorable hemodynamics in this case may support use in narrow aortic roots; leaves open confirmation in prospective series.
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.
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Semb et al. (1979) studied this question.
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