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  • Title: Comparison of baseline predictors of prognosis in pulmonary arterial hypertension in patients surviving ≤2 years and those surviving ≥5 years after baseline right-sided cardiac catheterization.
    Author: Batal O, Khatib OF, Dweik RA, Hammel JP, McCarthy K, Minai OA.
    Journal: Am J Cardiol; 2012 May 15; 109(10):1514-20. PubMed ID: 22360818.
    Abstract:
    Idiopathic pulmonary arterial hypertension (PAH) is usually associated with a poor outcome but the prognosis with other forms of PAH is not well-described. Advances in therapy have furthered clouded the disease course. We sought to determine the baseline indicators of prognosis in patients with PAH. We reviewed the records of patients with PAH followed up at our institution to identify those who died within 2 years (reduced survival group; n = 21) and those who survived >5 years (long survival group; n = 60). The groups were compared for prognostic significance of the baseline clinical parameters. The reduced survival group were older (p = 0.001) and more likely to have scleroderma-associated PAH (p = 0.01), have pericardial effusion (p = 0.01), have a shorter 6-minute walk test (6MWT) distance (p = 0.001), to require oxygen during 6MWT (p = 0.02), have a worse World Health Organization functional class (p <0.001), and have greater serum brain natriuretic peptide levels (p = 0.01). Regression analysis showed age, World Health Organization functional class, 6MWT distance, the need for oxygen during the 6MWT, and renal disease to be independently associated with a poor prognosis. In conclusion, age, PAH etiology, World Health Organization functional class, pericardial effusion, 6MWT distance, the need for oxygen during the 6MWT, and brain natriuretic peptide are predictors of prognosis in patients PAH receiving specific therapy and might help identify a group that could benefit from aggressive upfront therapy.
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