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Figure 2 (A) Velocity of shortening-end-systolic wall stress relationship by regurgitant valve during acute rheumatic fever in group II patients. The shaded area indicates the normal range. (B) The stress-velocity relationships for the same patient group derived from (A). Large symbols and bars = mean ± one standard deviation. p values are derived from comparison with the normal population and between the two valve groups using the Newman-Keuls multiple comparison test (see text for details). AR = aortic regurgitation; ESSc = circumferential end-systolic wall stress; MR = mitral regurgitation; VCFC = rate corrected velocity of circumferential fiber shortening.
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