Copeptin, C-reactive protein, and procalcitonin as prognostic biomarkers in acute exacerbation of COPD

BACKGROUND: A novel approach to estimate the severity of COPD exacerbation and predict its outcome is the use of biomarkers. We assessed circulating levels of copeptin, the precursor of vasopressin, C-reactive protein (CRP), and procalcitonin as potential prognostic parameters for in-hospital and long-term outcomes in patients with acute exacerbation of COPD (AECOPD) requiring hospitalization. METHODS: Data of 167 patients (mean age, 70 years; mean FEV(1), 39.9 +/- 16.9 of predicted [+/- SD]) presenting to the emergency department due to AECOPD were analyzed. Patients were evaluated based on clinical, laboratory, and lung function parameters on hospital admission, at 14 days, and at 6 months. RESULTS: Plasma levels of all three biomarkers were elevated during the acute exacerbation (p /= 40 pmol/L and a history of hospitalization (p > 0.0001). CONCLUSIONS: We suggest copeptin as a prognostic marker for short-term and long-term prognoses in patients with AECOPD requiring hospitalization.

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