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Bland-Altman analysis demonstrating lack of agreement between the pulmonary artery systolic pressure estimated by Doppler echocardiogram and pulmonary artery systolic pressure (PASP) measured by right heart catheterization. (From Selby VN, Scherzer R, Barnett CF, et al. Doppler echocardiography does not accurately estimate pulmonary artery systolic pressure in HIV-infected patients. AIDS 2012;26:1968; with permission.)
