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Figure 1: Linear regression plot for pulmonary vascular resistance at catheterization (PVRcath) versus (TRV)/( VTIRVOT) ratio (r = 0.896, 95% confidence interval [CI] 0.816 to 0.9423, P < 0.001)

Figure 1: Linear regression plot for pulmonary vascular resistance at catheterization (PVRcath) <i>versus</i> (TRV)/( VTIR<sub>VOT</sub>) ratio (r = 0.896, 95% confidence interval [CI] 0.816 to 0.9423, <i>P</i> < 0.001)