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Figure 1 Association among hemodynamic indices of aortic stenosis. Results of the cluster analysis of variables in Group B show an initial split into two groups, flow-corrected and non–flow-corrected indices, with a fair correlation between them (rho2 = 0.37). Stroke work loss closely correlates with  P, as expected from its calculation formula. Also, there was a close association between AVA and AVR.
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