The Hall-Kaster disc valve prosthesis: clinical and hemodynamic observations in patients undergoing aortic valve replacement.

@article{Semb1980TheHD,
  title={The Hall-Kaster disc valve prosthesis: clinical and hemodynamic observations in patients undergoing aortic valve replacement.},
  author={Bjarne K. H. Semb and Sigurd Nitter-Hauge and Keele Hall},
  journal={The Journal of cardiovascular surgery},
  year={1980},
  volume={21 4},
  pages={
          387-94
        }
}
In a series of 113 patients receiving Hall-Kaster aortic valve prostheses intraoperative- and postoperative hemodynamic studies revealed favourable utilization of the valve orifice for transvalvar forward flow. Angiography demonstrated optimal disc opening and minor valvar regurgitation. A significant clinical improvement and improvement of left ventricular function were observed postoperatively. 

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