Pulmonary artery catheterization and echocardiographic are essential tests in the diagnostic process of patients with Pulmonary Hypertension (PH). The first one, as the gold standard defined (invasive procedure); the other, as usual non-invasive heart analysis. <b>Aim:</b> To evaluate the potencial concordance between invasisve hemodynamic and echocardiographic, in PAH and CTEPH patients from the Colombian Network of Pulmonary Hypertension. <b>Methods:</b> Cross-sectional study of data from 571 subjects in 7 national hospital centers, consolidated in a central database. We selected adults with a PAH and CTEPH diagnosis. Lin9s and Pearson9s correlation coefficients and Bland-Altman agreement limits were estimated. <b>Results:</b> Mean difference in sPAP by catheterization vs. echocardiography was 10±28 mmHg (+67 to -47), with Lin coefficient of 0.32 and Pearson coefficient 0.349 (Graphs 1). In men, the difference was 6±25 mmHg, while in women it was 12±30 (Lin=0.27; Pearson=0.3, p<0.001) (Graph 2). Dispersion of values was evident. <b>Conclusions:</b> There are relevant differences between PAP values obtained from hemodynamic variables vs. echocardiographic pressures in a range between +67 and -47 mmHg. These differences are greater among women. The impact of this low concordance on risk stratification and clinical behaviors deserves to be evaluated.
