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  • Title: Inhaled corticosteroids and systemic inflammatory response in community-acquired pneumonia: a prospective clinical study.
    Author: Ferrer M, Torres A, Martínez R, Ramírez P, Polverino E, Montull B, Sialer S, Niederman MS, Agusti A, Menéndez R.
    Journal: Respirology; 2014 Aug; 19(6):929-35. PubMed ID: 24909304.
    Abstract:
    BACKGROUND AND OBJECTIVE: The previous use of inhaled corticosteroids (ICS) may reduce the inflammatory response and mortality in patients with community-acquired pneumonia (CAP). METHODS: We measured serum levels of several inflammatory biomarkers, as well as mortality at various time-points, in 663 consecutive patients hospitalized for CAP; 128 (19%) were receiving chronic outpatient treatment with ICS. Patients on previous oral corticosteroids were excluded from the analysis. RESULTS: On admission, patients treated with ICS were older; had been diagnosed with chronic obstructive pulmonary disease (COPD), asthma and pneumonia in the previous year more often; and had higher CAP severity risk classes and lower tumour necrosis factor (TNF)-alpha (P < 0.001) and interleukin (IL)-6 (P = 0.015) serum levels. After adjusting for potential confounders, this association persisted for TNF-alpha (P < 0.001), but not for IL-6. Mortality at 30 and 90 days tended to be lower in patients treated with ICS (P = 0.062 and 0.050, respectively), but mortality was similar after 1 year in both groups (16, 13% vs 81, 15% for patients treated and not treated with ICS, respectively). Hospital readmission rate after 1 year was higher in patients treated with ICS (49, 38% vs 109, 20%, P < 0.001). The association of ICS treatment with a previous diagnosis of pneumonia, lower levels of TNF-alpha and IL-6 on admission and higher readmission rates during follow up persisted in the subpopulation of 210 patients with COPD. CONCLUSIONS: Previous use of ICS in patients hospitalized for CAP is associated with a reduced systemic inflammatory response without any impact on long-term mortality.
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