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Figure 8 Ejection fraction is plotted against afterload for aortic regurgitation patients before and after aortic valve replacement for patients with preserved and patients with depressed preoperative ejection fraction. In both groups, afterload decreased and ejection fraction increased following surgery. Triangles = Group 1 (n = 23); squares = Group 2 (n = 6); circles = normal subjects. Reprinted from Taniguchi et al. (45) with permission.
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