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Echocardiography (ECHO)-estimated sPAP values according to severity of PH diagnosed with cardiac catheterization (CATH). PH was defined as mPAP of >25 mm Hg, mild/moderate PH was defined as PH with a mPAP/mean systemic arterial pressure ratio of <0.67, and severe PH was defined as PH with a mPAP/mean systemic arterial pressure ratio of ≥0.67. There were no significant differences between the mean sPAP values of the 3 groups according to analysis of variance.
