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Figure 4 | Journal of Cardiothoracic Surgery

Figure 4

From: Effect of surgeon on transprosthetic gradients after aortic valve replacement with Freestyle® stentless bioprosthesis and its consequences: A follow-up study in 587 patients

Figure 4

Learning curve of one surgeon concerning transprosthetic gradients after stentless valve implantation [p < 0.001]. The example of one surgeon shows that the mean gradients in subcoronary technique decrease during a time period of 8 years. Beside proper valve sizing and use of total root technique in difficult cases with small aortic roots, the phenomena can be best explained by the increasing ability of the surgeon to fit the valve smoothly into the aortic root and to handle the various aortic root geometries.

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