Comparison of exercise hemodynamics among nonstented aortic bioprostheses, mechanical valves, and normal native aortic valves.

@article{Silberman1998ComparisonOE,
  title={Comparison of exercise hemodynamics among nonstented aortic bioprostheses, mechanical valves, and normal native aortic valves.},
  author={Shuli Silberman and Joseph Shaheen and Daniel A. Fink and Dan Tzivoni and David Rosenmann and Nadiv Shapira and Nurith Strauss-Liviatan and Dan Bitran},
  journal={Journal of cardiac surgery},
  year={1998},
  volume={13 5},
  pages={412-6}
}
BACKGROUND While aortic valve prostheses are known to perform well at rest, few studies have examined them under stress. We compared stress hemodynamics of mechanical valves and nonstented porcine valves in the aortic position to that of normal native aortic valves. METHODS Dobutamine echocardiography was used to assess mean and peak gradients and effective orifice area index (EOAI) at rest and exercise in patients with the Toronto Stentless Porcine Valve (SPV) (n = 13, mean implant size 25.7… CONTINUE READING

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