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Comparison of LV end-systolic (ES) maximum shortening in controls and in surgical MR patients with pre-operative LVESD < and ≥ 37mm before and after surgery. These data demonstrate that maximum shortening is decreased below normal in both groups of MR patients except that LVES maximum shortening is preserved at the base in patients with pre-operative LVESD <37 mm. *: P<0.05 vs. controls; †: P<0.05 vs. pre-operative MR.
