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Table 5 Experience of the surgeons at end of 2004

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

Surgeons Years in Cardiac Surgery Major cardiac surgery performed [N] Valve implantation performed [N] Freestyle valve implantation performed [N] Mean transprosthetic gradients in subcoronary technique (ANOVA, p < 0.001)
F > 20 > 5000 > 1000 26 14
E > 10 2500 400 66 17
C > 20 > 4000 > 1000 280 18
A > 10 2000 400 53 22
B > 15 2500 500 74 22
D > 10 1000 250 41 24