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
Heart valve - Hemodynamics - Gradient - Flow
