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Figure 6 Regression plot between pulmonary capillary wedge pressure (PCWP) by catheter versus the dimensionless ratio of isovolumetric relaxation time (IVRT)/TEa-E in all 93 patients. The dashed line is the regression plot line. The vertical line marks the IVRT/TEa-E cutoff of 2, and the horizontal line marks the PCWP cutoff of 15.
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