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Systolic energy loss (EL′) in the ascending aorta of healthy, dilation-only, and dilated/stenotic aorta cohorts as compared to the net transvalvular pressure gradient (TPGnet, Eq. 1), as calculated by the Bernoulli equation modified to account for pressure recovery effects (17). This correlation was slightly better than the correlation of EL′ to TPGmax (r2=0.86, P<0.001).
