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Medicina Interna

Print version ISSN 0872-671X

Abstract

SERODIO, João Fernandes et al. Etiology, Treatment and Prognosis of Acute Pericarditis. Medicina Interna [online]. 2020, vol.27, n.1, pp.19-24. ISSN 0872-671X.  https://doi.org/10.24950/O/185/19/1/2020.

Introduction: Acute pericarditis is a common inflammatory condition of the pericardium usually assumed to be viral or idiopathic. Despite recent treatment improvements, information is scarce regarding etiology and prognosis. Our aim was to determine the incidence of pericarditis with a known etiology and assess clinical prognostic predictors. Material and Methods: A clinical retrospective analysis of hospitalized patients with acute pericarditis was conducted from 2012 to 2016. Population was characterized according to etiology, clinical presentation, treatment and prognosis. Outcomes of interest, evaluated at one year after hospital discharge, were pericarditis recurrence, hospitalization, constriction and overall mortality. Results: A total of 94 patients were enrolled, median age 46 years (inter-quartile range 32-61), 65% were male. Idiopathic etiology was responsible for 68% of cases. A specific etiology was found in the remaining 32% of patients, being the most frequent autoimmune disease (12%) and malignancy (5%). Idiopathic pericarditis was associated with myopericarditis (p = 0.049) and a known etiology with pericardial effusion (p = 0.001) and cardiac tamponade (p = 0.027). Recurrence of pericarditis was found in 13% of patients. Corticosteroid treatment in patients with an identified etiology was not associated with an increase in recurrence (p = 0.220). Overall 1-year mortality was 9%. A defined etiology was the only independent predictor of mortality at multivariate analysis (OR 40.3; 95% CI 1.9 - 137.2; p = 0.016). Conclusion: Up to one third of hospitalized patients with acute pericarditis have an identified cause of pericarditis and these patients are at increased risk of mortality.

Keywords : Acute Disease; Pericarditis/diagnosis; Pericarditis/etiology; Pericarditis/therapy; Prognosis.

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