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Figure 3 Correlation between mean transvalvular gradient and indexed effective orifice area in patients with a stented bioprosthesis (solid circles, n = 51), a stentless bioprosthesis (open circles, n = 194), an aortic homograft (open triangles, n = 55) or a pulmonary autograft (open boxes, n = 96). Panels A and B show this relation for mean gradient measured at rest in all patients and during maximal exercise in a subgroup of 48 patients, respectively. Several points are overlapped.
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